79497870 has 16 divisors (see below), whose sum is σ = 190794960. Its totient is φ = 21199424.

The previous prime is 79497833. The next prime is 79497911. The reversal of 79497870 is 7879497.

It is a super-2 number, since 2×79497870² = 12639822669073800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 in 7 ways as a sum of consecutive naturals, for example, 1324935 + ... + 1324994.

It is an arithmetic number, because the mean of its divisors is an integer number (11924685).

Almost surely, 2^79497870 is an apocalyptic number.

79497870 is an abundant number, since it is smaller than the sum of its proper divisors (111297090).

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

79497870 is a wasteful number, since it uses less digits than its factorization.

79497870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649939.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 79497870 is about 8916.1578047946. The cubic root of 79497870 is about 429.9835400225.

The spelling of 79497870 in words is "seventy-nine million, four hundred ninety-seven thousand, eight hundred seventy".