Fatto generale: 4996 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4996 is a boring number.
Trivia: 4996 is a boring number.
Data storica: September 4th is the day in 1888 that George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.