79015971 has 24 divisors (see below), whose sum is σ = 112368384. Its totient is φ = 49286160.

The previous prime is 79015961. The next prime is 79015973. The reversal of 79015971 is 17951097.

It is not a de Polignac number, because 79015971 - 2⁵ = 79015939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79015973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 622110 + ... + 622236.

It is an arithmetic number, because the mean of its divisors is an integer number (4682016).

Almost surely, 2^79015971 is an apocalyptic number.

79015971 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

79015971 is a deficient number, since it is larger than the sum of its proper divisors (33352413).

79015971 is a wasteful number, since it uses less digits than its factorization.

79015971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 39.

The square root of 79015971 is about 8889.0928108553. The cubic root of 79015971 is about 429.1129559494.

It can be divided in two parts, 790 and 15971, that added together give a palindrome (16761).

The spelling of 79015971 in words is "seventy-nine million, fifteen thousand, nine hundred seventy-one".