879638879 has 4 divisors (see below), whose sum is σ = 1005301584. Its totient is φ = 753976176.

The previous prime is 879638867. The next prime is 879638911. The reversal of 879638879 is 978836978.

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 879638879 - 2⁴ = 879638863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879638579) 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, 62831342 + ... + 62831355.

It is an arithmetic number, because the mean of its divisors is an integer number (251325396).

Almost surely, 2^879638879 is an apocalyptic number.

879638879 is a deficient number, since it is larger than the sum of its proper divisors (125662705).

879638879 is a wasteful number, since it uses less digits than its factorization.

879638879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125662704.

The product of its digits is 36578304, while the sum is 65.

The square root of 879638879 is about 29658.7066306001. The cubic root of 879638879 is about 958.1528714833.

The spelling of 879638879 in words is "eight hundred seventy-nine million, six hundred thirty-eight thousand, eight hundred seventy-nine".