Fatto generale: 9924 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9924 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 9924 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: March 3rd is the day in 1904 that Kaiser Wilhelm II of Germany becomes the first person to make a sound recording of a political document, using Thomas Edison's phonograph cylinder.