Fatto generale: 63439 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 63439 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 63439 is an unremarkable number.
Data storica: September 8th is the day in 1965 that Pakistan Navy raids Indian coasts without any resistance in Operation Dwarka, Pakistan celebrates Victory Day annually.