General fact: 9415 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 9415 is the sum of the first 19 numbers that have digit sum 19.
Trivia: 9415 is an uninteresting number.
Historical date: October 10th is the day in 1971 that Sold, dismantled and moved to the United States, London Bridge reopens in Lake Havasu City, Arizona.