504485991 has 12 divisors (see below), whose sum is σ = 738685168. Its totient is φ = 331716384.

The previous prime is 504485983. The next prime is 504486007. The reversal of 504485991 is 199584405.

504485991 is a `hidden beast` number, since 50 + 4 + 4 + 8 + 599 + 1 = 666.

It is not a de Polignac number, because 504485991 - 2³ = 504485983 is a prime.

It is a super-2 number, since 2×504485991² = 509012230230504162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504485941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383275 + ... + 384588.

Almost surely, 2^504485991 is an apocalyptic number.

504485991 is a deficient number, since it is larger than the sum of its proper divisors (234199177).

504485991 is a wasteful number, since it uses less digits than its factorization.

504485991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767942 (or 767939 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 504485991 is about 22460.7655924726. The cubic root of 504485991 is about 796.0671512038.

The spelling of 504485991 in words is "five hundred four million, four hundred eighty-five thousand, nine hundred ninety-one".