Fatto generale: 4777 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4777 is a boring number.
Trivia: 4777 is a boring number.
Data storica: January 28th is the day in 1909 that United States troops leave Cuba with the exception of Guantanamo Bay Naval Base after being there since the Spanish-American War.