879742155 has 32 divisors (see below), whose sum is σ = 1451032128. Its totient is φ = 454809600.

The previous prime is 879742153. The next prime is 879742181. The reversal of 879742155 is 551247978.

It is not a de Polignac number, because 879742155 - 2¹ = 879742153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (879742153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153135 + ... + 158775.

It is an arithmetic number, because the mean of its divisors is an integer number (45344754).

Almost surely, 2^879742155 is an apocalyptic number.

879742155 is a deficient number, since it is larger than the sum of its proper divisors (571289973).

879742155 is a wasteful number, since it uses less digits than its factorization.

879742155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967.

The product of its digits is 705600, while the sum is 48.

The square root of 879742155 is about 29660.4476533986. The cubic root of 879742155 is about 958.1903680537.

The spelling of 879742155 in words is "eight hundred seventy-nine million, seven hundred forty-two thousand, one hundred fifty-five".