Fatto generale: 88405 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 88405 is a boring number.
Trivia: 88405 is an unremarkable number.
Data storica: January 16th is the day in 27 BC that Gaius Julius Caesar Octavianus is granted the title Augustus by the Roman Senate, marking the beginning of the Roman Empire.