879511091 has 4 divisors (see below), whose sum is σ = 885414000. Its totient is φ = 873608184.

The previous prime is 879511069. The next prime is 879511109. The reversal of 879511091 is 190115978.

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

It is a cyclic number.

It is not a de Polignac number, because 879511091 - 2¹⁰ = 879510067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879511001) 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, 2951231 + ... + 2951528.

It is an arithmetic number, because the mean of its divisors is an integer number (221353500).

Almost surely, 2^879511091 is an apocalyptic number.

879511091 is a deficient number, since it is larger than the sum of its proper divisors (5902909).

879511091 is a wasteful number, since it uses less digits than its factorization.

879511091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902908.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 879511091 is about 29656.5522439814. The cubic root of 879511091 is about 958.1064712420.

The spelling of 879511091 in words is "eight hundred seventy-nine million, five hundred eleven thousand, ninety-one".