Fait général: 4639 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4639 is an unremarkable number.
Culture générale: 4639 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 12th is the day in 1229 that the Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Majorca, with the purpose of conquering the island.