Fatto matematico: 49963 is an unremarkable number.
Trivia: 49963 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: October 16th is the day in 1975 that Rahima Banu, a two-year old girl from the village of Kuralia in Bangladesh, is the last known person to be infected with naturally occurring smallpox.