79956191 has 12 divisors (see below), whose sum is σ = 95281200. Its totient is φ = 66860640.

The previous prime is 79956181. The next prime is 79956203. The reversal of 79956191 is 19165997.

It is not a de Polignac number, because 79956191 - 2⁶ = 79956127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79956101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17891 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (7940100).

Almost surely, 2^79956191 is an apocalyptic number.

79956191 is a deficient number, since it is larger than the sum of its proper divisors (15325009).

79956191 is a wasteful number, since it uses less digits than its factorization.

79956191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39854 (or 39847 counting only the distinct ones).

The product of its digits is 153090, while the sum is 47.

The square root of 79956191 is about 8941.8225770813. The cubic root of 79956191 is about 430.8082706204.

The spelling of 79956191 in words is "seventy-nine million, nine hundred fifty-six thousand, one hundred ninety-one".