Fatto generale: 4249 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4249 is a value of n for which |cos(n)| is smaller than any previous integer.
Trivia: 4249 is a boring number.
Data storica: August 19th is the day in 1895 that American frontier murderer and outlaw, John Wesley Hardin, is killed by an off-duty policeman in a saloon in El Paso, Texas.