495689931 has 36 divisors (see below), whose sum is σ = 789738040. Its totient is φ = 299376000.

The previous prime is 495689923. The next prime is 495689933. The reversal of 495689931 is 139986594.

495689931 is a `hidden beast` number, since 49 + 568 + 9 + 9 + 31 = 666.

It is not a de Polignac number, because 495689931 - 2³ = 495689923 is a prime.

It is a super-2 number, since 2×495689931² = 491417015389569522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495689933) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 412131 + ... + 413331.

Almost surely, 2^495689931 is an apocalyptic number.

495689931 is a deficient number, since it is larger than the sum of its proper divisors (294048109).

495689931 is a wasteful number, since it uses less digits than its factorization.

495689931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 1594 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 495689931 is about 22264.0951084925. The cubic root of 495689931 is about 791.4133386955.

The spelling of 495689931 in words is "four hundred ninety-five million, six hundred eighty-nine thousand, nine hundred thirty-one".