79138844 has 12 divisors (see below), whose sum is σ = 138587904. Its totient is φ = 39542304.

The previous prime is 79138831. The next prime is 79138867. The reversal of 79138844 is 44883197.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 79138795 and 79138804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 12600.

It is an arithmetic number, because the mean of its divisors is an integer number (11548992).

Almost surely, 2^79138844 is an apocalyptic number.

It is an amenable number.

79138844 is a deficient number, since it is larger than the sum of its proper divisors (59449060).

79138844 is a wasteful number, since it uses less digits than its factorization.

79138844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13564 (or 13562 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 79138844 is about 8896.0015737409. The cubic root of 79138844 is about 429.3352700319.

The spelling of 79138844 in words is "seventy-nine million, one hundred thirty-eight thousand, eight hundred forty-four".