General fact: 47805 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47805 is an uninteresting number.
Trivia: 47805 is a boring number.
Historical date: November 19th is the day in 2010 that the first of four explosions takes place at the Pike River Mine in New Zealand; 29 people are killed in the nation's worst mining disaster since 1914.