Hecho general: 13893 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 13893 is an uninteresting number.
Trivia: 13893 is an unremarkable number.
Fecha histórica: January 13th is the day in 1985 that a passenger train plunges into a ravine in Ethiopia, killing 428 in the worst railroad disaster in Africa.