79171995 has 24 divisors (see below), whose sum is σ = 147358224. Its totient is φ = 36192576.

The previous prime is 79171979. The next prime is 79171999. The reversal of 79171995 is 59917197.

It is a happy number.

It is not a de Polignac number, because 79171995 - 2⁴ = 79171979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79171999) 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, 53124 + ... + 54593.

It is an arithmetic number, because the mean of its divisors is an integer number (6139926).

Almost surely, 2^79171995 is an apocalyptic number.

79171995 is a deficient number, since it is larger than the sum of its proper divisors (68186229).

79171995 is a wasteful number, since it uses less digits than its factorization.

79171995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107739 (or 107732 counting only the distinct ones).

The product of its digits is 178605, while the sum is 48.

The square root of 79171995 is about 8897.8646314720. The cubic root of 79171995 is about 429.3952107045.

The spelling of 79171995 in words is "seventy-nine million, one hundred seventy-one thousand, nine hundred ninety-five".