804877131 has 4 divisors (see below), whose sum is σ = 1073169512. Its totient is φ = 536584752.

The previous prime is 804877093. The next prime is 804877147. The reversal of 804877131 is 131778408.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-804877131 is a prime.

It is a super-2 number, since 2×804877131² = 1295654392013582322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 804877131.

It is not an unprimeable number, because it can be changed into a prime (804877331) 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, 134146186 + ... + 134146191.

It is an arithmetic number, because the mean of its divisors is an integer number (268292378).

Almost surely, 2^804877131 is an apocalyptic number.

804877131 is a deficient number, since it is larger than the sum of its proper divisors (268292381).

804877131 is a wasteful number, since it uses less digits than its factorization.

804877131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268292380.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 804877131 is about 28370.3565539808. The cubic root of 804877131 is about 930.2004158197.

The spelling of 804877131 in words is "eight hundred four million, eight hundred seventy-seven thousand, one hundred thirty-one".