Fatto generale: 9881 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9881 is a boring number.
Trivia: 9881 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 19th is the day in 1817 that an army of 5,423 soldiers, led by General José de San Martín, crosses the Andes from Argentina to liberate Chile and then Peru.