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ANALYSIS: Facts and figures behind 99 days of President Trump's tweets

Donald Trump is sworn in as the 45th president of the United States by Chief Justice John Roberts as Melania Trump looks on during the 58th Presidential Inauguration at

Four hundred and seventy: the number of times a user of the @realDonaldTrump Twitter account has clicked "Tweet" since Jan. 20 -- Inauguration Day.

In his first 99 days in office, President Donald Trump has occupied one of the most controversial presidencies of the modern era, tangling with reporters, protesters, foreign countries and members of both major political parties, all while pursuing an aggressive agenda that for the 19 months prior he promised will "make America great again.

The Twitter account, which Trump personally utilized for over six years before launching his bid for the highest office in the United States, has become a microcosm of the operation within the White House -- reflexive, combative, ambitious, provocative, inimitable and relentlessly focused on success.

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99 days of Twitter: A timeline of President Trump's tweets

ABC News has compiled and organized every tweet from the account since the morning just before Trump took the oath of office through day 99. What follows is an analysis of the tome, composed from 9,066 words comprised of 54,734 characters.

What is he tweeting about?

Topics of the president's tweets have spanned the breadth of the administration's ambitions, from health care and immigration reform to national security and the economy. But Trump's 140-character notes don't simply ebb and flow with the tide of current events; he often dictates the news cycle himself, drawing the public's attention to new subjects and reigniting past issues.

Perhaps the most notable instance of Trump driving the discourse in Washington was his March 4 outburst in which he accused former President Barack Obama of wiretapping Trump Tower without providing evidence. The resulting uproar engulfed intelligence committees in both chambers of Congress and led to Rep. Devin Nunes', R-California, recusal from the house investigation into Russian interference in the presidential election.

A dive into commonly mentioned terms finds many of the subjects one would expect: "Democrat" and its derivatives are mentioned 36 times, almost always in tweets attacking the party, while "Republican" or "GOP" appear on 18 occasions. "Russia" is addressed 25 times, though there are just two mentions of "Putin." "Obama" is referenced 16 times and "Obamacare" another 10.

PHOTO: First 100 Days Chart 4

Some of the most frequent tweets are those about the media, of which there are at least 65 -- nearly 14 percent of all posts. The word "media" is directly cited 32 times; "fake news" shows up on 30 occasions and three of the top four handles Trump has included in tweets are media-related: @nytimes, @foxandfriends, and @FoxNews with 17, 11 and nine mentions, respectively. He has tweeted twice about the show he used to host, "The Apprentice," using both instances to attack his replacement, Arnold Schwarzenegger.

Other recurrent subjects include immigration, about which there are at least 41 tweets, and health care, which covered at least 36 messages. ABC News classifies an additional 103 tweets as "promotional," in which events, meetings, actions, and initiatives are touted.

Tweets with a link to an external website number 79, while 107 include either an image or video, 20 of which came from inside the Oval Office.