Fatto matematico: 90040 is an uninteresting number.
Trivia: 90040 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: July 9th is the day in 1979 that a car bomb destroys a Renault motor car owned by famed "Nazi hunters" Serge and Beate Klarsfeld at their home in France.