79531868 has 12 divisors (see below), whose sum is σ = 149887080. Its totient is φ = 36706992.

The previous prime is 79531867. The next prime is 79531873. The reversal of 79531868 is 86813597.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79531867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764678 + ... + 764781.

It is an arithmetic number, because the mean of its divisors is an integer number (12490590).

Almost surely, 2^79531868 is an apocalyptic number.

It is an amenable number.

79531868 is a deficient number, since it is larger than the sum of its proper divisors (70355212).

79531868 is a wasteful number, since it uses less digits than its factorization.

79531868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529476 (or 1529474 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 79531868 is about 8918.0641397110. The cubic root of 79531868 is about 430.0448267671.

The spelling of 79531868 in words is "seventy-nine million, five hundred thirty-one thousand, eight hundred sixty-eight".