Fatto generale: 19940 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 19940 is a boring number.
Trivia: 19940 is an unremarkable number.
Data storica: August 4th is the day in 1892 that the father and stepmother of Lizzie Borden are found murdered in their Fall River, Massachusetts home.