447

447 = 3 x 149.

447 is a divisor of 44⁴ - 1.

447 is the smallest number of convex quadrilaterals formed by 15 points in general position.

447 is 677 in base 8 and 377 in base 11. It is 313 in base 12.

447 is a number that cannot be written as a sum of three squares.

Air France Flight 447 from Rio de Janeiro to Paris crashed into the Atlantic Ocean on June 1, 2009.

Source: What's Special About This Number?