879020955 has 72 divisors (see below), whose sum is σ = 1631009952. Its totient is φ = 437846016.

The previous prime is 879020941. The next prime is 879020963. The reversal of 879020955 is 559020978.

It is a happy number.

It is not a de Polignac number, because 879020955 - 2⁴ = 879020939 is a prime.

It is a super-2 number, since 2×879020955² = 1545355678658224050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 879020955.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3342154 + ... + 3342416.

It is an arithmetic number, because the mean of its divisors is an integer number (22652916).

Almost surely, 2^879020955 is an apocalyptic number.

879020955 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

879020955 is a deficient number, since it is larger than the sum of its proper divisors (751988997).

879020955 is a wasteful number, since it uses less digits than its factorization.

879020955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 879020955 is about 29648.2875559449. The cubic root of 879020955 is about 957.9284595645.

The spelling of 879020955 in words is "eight hundred seventy-nine million, twenty thousand, nine hundred fifty-five".