Fait général: 8499 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 8499 is the sum of the squares of 3 consecutive primes.
Culture générale: 8499 is a boring number.
Date historique: April 8th is the day in 1954 that a Royal Canadian Air Force Canadair Harvard collided with a Trans-Canada Airlines Canadair North Star over Moose Jaw, Saskatchewan, killing 37 people.