809807938 has 16 divisors (see below), whose sum is σ = 1219898880. Its totient is φ = 403179616.

The previous prime is 809807909. The next prime is 809807963. The reversal of 809807938 is 839708908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849270 + ... + 850222.

It is an arithmetic number, because the mean of its divisors is an integer number (76243680).

Almost surely, 2^809807938 is an apocalyptic number.

809807938 is a deficient number, since it is larger than the sum of its proper divisors (410090942).

809807938 is a wasteful number, since it uses less digits than its factorization.

809807938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 809807938 is about 28457.1245560756. The cubic root of 809807938 is about 932.0960692597.

The spelling of 809807938 in words is "eight hundred nine million, eight hundred seven thousand, nine hundred thirty-eight".