Fatto generale: 90917 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 90917 is a boring number.
Trivia: 90917 is a boring number.
Data storica: December 2nd is the day in 1954 that the Sino-American Mutual Defense Treaty, between the United States and the Republic of China, is signed in Washington, D.C..