816920908 has 12 divisors (see below), whose sum is σ = 1429811712. Its totient is φ = 408403280.

The previous prime is 816920887. The next prime is 816920911. The reversal of 816920908 is 809029618.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48693 + ... + 63283.

It is an arithmetic number, because the mean of its divisors is an integer number (119150976).

Almost surely, 2^816920908 is an apocalyptic number.

It is an amenable number.

816920908 is a deficient number, since it is larger than the sum of its proper divisors (612890804).

816920908 is a wasteful number, since it uses less digits than its factorization.

816920908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28592 (or 28590 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 816920908 is about 28581.8282830193. The cubic root of 816920908 is about 934.8171482252.

The spelling of 816920908 in words is "eight hundred sixteen million, nine hundred twenty thousand, nine hundred eight".