Fait général: 4798 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4798 is a value of n for which n!!!.
Culture générale: 4798 is an uninteresting number.
Date historique: February 18th is the day in 1978 that the first Ironman Triathlon competition takes place on the island of Oahu, won by Gordon Haller.