79639828 has 12 divisors (see below), whose sum is σ = 141049440. Its totient is φ = 39339992.

The previous prime is 79639817. The next prime is 79639841. The reversal of 79639828 is 82893697.

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, 119608 + ... + 120271.

It is an arithmetic number, because the mean of its divisors is an integer number (11754120).

Almost surely, 2^79639828 is an apocalyptic number.

It is an amenable number.

79639828 is a deficient number, since it is larger than the sum of its proper divisors (61409612).

79639828 is a wasteful number, since it uses less digits than its factorization.

79639828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239966 (or 239964 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 79639828 is about 8924.1149701245. The cubic root of 79639828 is about 430.2393259403.

The spelling of 79639828 in words is "seventy-nine million, six hundred thirty-nine thousand, eight hundred twenty-eight".