Fatto generale: 87911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 87911 is an unremarkable number.
Trivia: 87911 is an uninteresting number.
Data storica: September 9th is the day in 1923 that Mustafa Kemal Atatürk, the founder of the Republic of Turkey, founds the Republican People's Party.