General fact: 47409 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47409 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 47409 is an uninteresting number.
Historical date: October 19th is the day in 1950 that Iran becomes the first country to accept technical assistance from the United States under the Point Four Program.