Fatto generale: 9377 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9377 is a value of n for which n, 2n, 3n, and 4n all use the same number of digits in Roman numerals.
Trivia: 9377 is an uninteresting number.
Data storica: September 2nd is the day in 1963 that CBS Evening News becomes U.S. network television's first half-hour weeknight news broadcast, when the show is lengthened from 15 to 30 minutes.