Hecho general: 9649 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 9649 is a boring number.
Trivia: 9649 is an unremarkable number.
Fecha histórica: June 1st is the day in 2009 that Air France Flight 447 crashes into the Atlantic Ocean off the coast of Brazil on a flight from Rio de Janeiro to Paris.