79872141 has 16 divisors (see below), whose sum is σ = 109948608. Its totient is φ = 51542400.

The previous prime is 79872131. The next prime is 79872173. The reversal of 79872141 is 14127897.

It is not a de Polignac number, because 79872141 - 2⁵ = 79872109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79872141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79872131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13635 + ... + 18591.

It is an arithmetic number, because the mean of its divisors is an integer number (6871788).

Almost surely, 2^79872141 is an apocalyptic number.

It is an amenable number.

79872141 is a deficient number, since it is larger than the sum of its proper divisors (30076467).

79872141 is a wasteful number, since it uses less digits than its factorization.

79872141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132.

The product of its digits is 28224, while the sum is 39.

The square root of 79872141 is about 8937.1215164616. The cubic root of 79872141 is about 430.6572623833.

The spelling of 79872141 in words is "seventy-nine million, eight hundred seventy-two thousand, one hundred forty-one".