Fait mathématique: 9377 is a value of n for which n, 2n, 3n, and 4n all use the same number of digits in Roman numerals.
Culture générale: 9377 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 2nd is the day in 1970 that NASA announces the cancellation of two Apollo missions to the Moon, Apollo 15 (the designation is re-used by a later mission), and Apollo 19.