79279136 has 24 divisors (see below), whose sum is σ = 156283344. Its totient is φ = 39588160.

The previous prime is 79279133. The next prime is 79279139. The reversal of 79279136 is 63197297.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79279133) and next prime (79279139).

It is not an unprimeable number, because it can be changed into a prime (79279133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40091 + ... + 42021.

It is an arithmetic number, because the mean of its divisors is an integer number (6511806).

Almost surely, 2^79279136 is an apocalyptic number.

It is an amenable number.

79279136 is a deficient number, since it is larger than the sum of its proper divisors (77004208).

79279136 is a wasteful number, since it uses less digits than its factorization.

79279136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224 (or 3216 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 79279136 is about 8903.8831977963. The cubic root of 79279136 is about 429.5888191267.

The spelling of 79279136 in words is "seventy-nine million, two hundred seventy-nine thousand, one hundred thirty-six".