79139224 has 8 divisors (see below), whose sum is σ = 148386060. Its totient is φ = 39569608.

The previous prime is 79139219. The next prime is 79139239. The reversal of 79139224 is 42293197.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4946194 + ... + 4946209.

Almost surely, 2^79139224 is an apocalyptic number.

It is an amenable number.

79139224 is a deficient number, since it is larger than the sum of its proper divisors (69246836).

79139224 is a wasteful number, since it uses less digits than its factorization.

79139224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892409 (or 9892405 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 79139224 is about 8896.0229316251. The cubic root of 79139224 is about 429.3359572087.

The spelling of 79139224 in words is "seventy-nine million, one hundred thirty-nine thousand, two hundred twenty-four".