Mathematical fact: 4879 is 238 + 0 + 4641 and has the square 23804641.
Trivia: 4879 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: May 10th is the day in 1503 that Christopher Columbus visits the Cayman Islands and names them Las Tortugas after the numerous turtles there.