Hecho general: 2459 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 2459 is an unremarkable number.
Trivia: 2459 is an uninteresting number.
Fecha histórica: September 24th is the day in 1877 that Battle of Shiroyama, decisive victory of the Imperial Japanese Army over the Satsuma Rebellion.