Fait mathématique: 47377 is an unremarkable number.
Culture générale: 47377 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 17th is the day in 1111 that Highest Galician nobility led by Pedro Fróilaz de Traba and the bishop Diego Gelmírez crown Alfonso VII as "King of Galicia".