Fait général: 84921 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 84921 is an unremarkable number.
Culture générale: 84921 is an unremarkable number.
Date historique: July 3rd is the day in 2001 that a Vladivostok Avia Tupolev Tu-154 jetliner crashes on approach to landing at Irkutsk, Russia killing 145 people.