811204979 has 16 divisors (see below), whose sum is σ = 888615840. Its totient is φ = 735989760.

The previous prime is 811204969. The next prime is 811204991. The reversal of 811204979 is 979402118.

It is a cyclic number.

It is not a de Polignac number, because 811204979 - 2²⁴ = 794427763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811204949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575027 + ... + 576435.

It is an arithmetic number, because the mean of its divisors is an integer number (55538490).

Almost surely, 2^811204979 is an apocalyptic number.

811204979 is a deficient number, since it is larger than the sum of its proper divisors (77410861).

811204979 is a wasteful number, since it uses less digits than its factorization.

811204979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 811204979 is about 28481.6603975260. The cubic root of 811204979 is about 932.6317634919.

The spelling of 811204979 in words is "eight hundred eleven million, two hundred four thousand, nine hundred seventy-nine".