Fatto generale: 83438 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 83438 is an uninteresting number.
Trivia: 83438 is an unremarkable number.
Data storica: June 11th is the day in 1903 that Group of Serbian officers stormed royal palace and assassinated King Alexander Obrenović and his wife queen Draga.