804690939 has 16 divisors (see below), whose sum is σ = 1155974400. Its totient is φ = 494971296.

The previous prime is 804690917. The next prime is 804690947. The reversal of 804690939 is 939096408.

It is a happy number.

It is not a de Polignac number, because 804690939 - 2⁸ = 804690683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (804690979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139882 + ... + 145520.

It is an arithmetic number, because the mean of its divisors is an integer number (72248400).

Almost surely, 2^804690939 is an apocalyptic number.

804690939 is a deficient number, since it is larger than the sum of its proper divisors (351283461).

804690939 is a wasteful number, since it uses less digits than its factorization.

804690939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9314.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 804690939 is about 28367.0749108892. The cubic root of 804690939 is about 930.1286826214.

The spelling of 804690939 in words is "eight hundred four million, six hundred ninety thousand, nine hundred thirty-nine".