General fact: 13929 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 13929 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 13929 is an unremarkable number.
Historical date: February 18th is the day in 1991 that the IRA explodes bombs in the early morning at Paddington station and Victoria station in London.