Hecho general: 83847 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 83847 is an unremarkable number.
Trivia: 83847 is an uninteresting number.
Fecha histórica: July 25th is the day in 1917 that Sir Robert Borden introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%).