79638534 has 12 divisors (see below), whose sum is σ = 172550196. Its totient is φ = 26546172.

The previous prime is 79638529. The next prime is 79638569. The reversal of 79638534 is 43583697.

79638534 is a `hidden beast` number, since 7 + 9 + 638 + 5 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 79638534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2212164 + ... + 2212199.

It is an arithmetic number, because the mean of its divisors is an integer number (14379183).

Almost surely, 2^79638534 is an apocalyptic number.

79638534 is an abundant number, since it is smaller than the sum of its proper divisors (92911662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79638534 is a wasteful number, since it uses less digits than its factorization.

79638534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424371 (or 4424368 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 79638534 is about 8924.0424696435. The cubic root of 79638534 is about 430.2369957297.

The spelling of 79638534 in words is "seventy-nine million, six hundred thirty-eight thousand, five hundred thirty-four".