Fait général: 9920 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 9920 is the maximum number of regions a cube can be cut into with 39 cuts.
Culture générale: 9920 is an unremarkable number.
Date historique: February 27th is the day in 2010 that an earthquake measuring 8.8 on the Richter scale strikes central parts of Chile leaving over 500 victims, and thousands injured.