979230155 has 4 divisors (see below), whose sum is σ = 1175076192. Its totient is φ = 783384120.

The previous prime is 979230149. The next prime is 979230157. The reversal of 979230155 is 551032979.

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

It is not a de Polignac number, because 979230155 - 2²⁶ = 912121291 is a prime.

It is a super-2 number, since 2×979230155² = 1917783392922648050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979230157) 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, 97923011 + ... + 97923020.

It is an arithmetic number, because the mean of its divisors is an integer number (293769048).

Almost surely, 2^979230155 is an apocalyptic number.

979230155 is a deficient number, since it is larger than the sum of its proper divisors (195846037).

979230155 is a wasteful number, since it uses less digits than its factorization.

979230155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195846036.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 979230155 is about 31292.6533710390. The cubic root of 979230155 is about 993.0282256516.

The spelling of 979230155 in words is "nine hundred seventy-nine million, two hundred thirty thousand, one hundred fifty-five".