Fait mathématique: 90498 is an uninteresting number.
Culture générale: 90498 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: October 10th is the day in 1911 that the Wuchang Uprising leads to the demise of Qing Dynasty, the last Imperial court in China, and the founding of the Republic of China.