Fatto generale: 98989 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 98989 is an unremarkable number.
Trivia: 98989 is a boring number.
Data storica: January 8th is the day in 1963 that Leonardo da Vinci's Mona Lisa is exhibited in the United States for the first time, at the National Gallery of Art in Washington, D.C.