Hecho general: 93639 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 93639 is an unremarkable number.
Trivia: 93639 is an unremarkable number.
Fecha histórica: May 16th is the day in 1975 that India annexes Sikkim after the mountain state holds a referendum in which the popular vote is in favor of merging with India.