499718857 has 4 divisors (see below), whose sum is σ = 545147856. Its totient is φ = 454289860.

The previous prime is 499718833. The next prime is 499718887. The reversal of 499718857 is 758817994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499718857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499718827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22714483 + ... + 22714504.

It is an arithmetic number, because the mean of its divisors is an integer number (136286964).

Almost surely, 2^499718857 is an apocalyptic number.

It is an amenable number.

499718857 is a deficient number, since it is larger than the sum of its proper divisors (45428999).

499718857 is a wasteful number, since it uses less digits than its factorization.

499718857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45428998.

The product of its digits is 5080320, while the sum is 58.

The square root of 499718857 is about 22354.3923424458. The cubic root of 499718857 is about 793.5517358618.

The spelling of 499718857 in words is "four hundred ninety-nine million, seven hundred eighteen thousand, eight hundred fifty-seven".