79871955 has 16 divisors (see below), whose sum is σ = 128189184. Its totient is φ = 42467040.

The previous prime is 79871929. The next prime is 79872019. The reversal of 79871955 is 55917897.

It is not a de Polignac number, because 79871955 - 2²⁰ = 78823379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79871898 and 79871907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3079 + ... + 13008.

It is an arithmetic number, because the mean of its divisors is an integer number (8011824).

Almost surely, 2^79871955 is an apocalyptic number.

79871955 is a deficient number, since it is larger than the sum of its proper divisors (48317229).

79871955 is a wasteful number, since it uses less digits than its factorization.

79871955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16426.

The product of its digits is 793800, while the sum is 51.

The square root of 79871955 is about 8937.1111104204. Note that the first 5 decimals coincide. The cubic root of 79871955 is about 430.6569280894.

The spelling of 79871955 in words is "seventy-nine million, eight hundred seventy-one thousand, nine hundred fifty-five".