808079904 has 72 divisors (see below), whose sum is σ = 2433167100. Its totient is φ = 253513728.

The previous prime is 808079903. The next prime is 808079933. The reversal of 808079904 is 409970808.

It can be written as a sum of positive squares in 2 ways, for example, as 647804304 + 160275600 = 25452^2 + 12660^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 808079904.

It is not an unprimeable number, because it can be changed into a prime (808079903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77629 + ... + 87420.

Almost surely, 2^808079904 is an apocalyptic number.

It is an amenable number.

808079904 is an abundant number, since it is smaller than the sum of its proper divisors (1625087196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808079904 is a wasteful number, since it uses less digits than its factorization.

808079904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165082 (or 165071 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 808079904 is about 28426.7462788128. The cubic root of 808079904 is about 931.4326029982.

The spelling of 808079904 in words is "eight hundred eight million, seventy-nine thousand, nine hundred four".