General fact: 8973 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 8973 is 8 + 9^{4} + 7^{4} + 3.
Trivia: 8973 is an uninteresting number.
Historical date: July 25th is the day in 1603 that James VI of Scotland is crowned as king of England (James I of England), bringing the Kingdom of England and Kingdom of Scotland into personal union.