499426857 has 8 divisors (see below), whose sum is σ = 739891680. Its totient is φ = 332951220.

The previous prime is 499426849. The next prime is 499426859. The reversal of 499426857 is 758624994.

499426857 is a `hidden beast` number, since 499 + 42 + 68 + 57 = 666.

It is not a de Polignac number, because 499426857 - 2³ = 499426849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499426859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9248619 + ... + 9248672.

It is an arithmetic number, because the mean of its divisors is an integer number (92486460).

Almost surely, 2^499426857 is an apocalyptic number.

It is an amenable number.

499426857 is a deficient number, since it is larger than the sum of its proper divisors (240464823).

499426857 is a wasteful number, since it uses less digits than its factorization.

499426857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18497300 (or 18497294 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 499426857 is about 22347.8602331409. The cubic root of 499426857 is about 793.3971407654.

The spelling of 499426857 in words is "four hundred ninety-nine million, four hundred twenty-six thousand, eight hundred fifty-seven".