79738669 has 4 divisors (see below), whose sum is σ = 79768480. Its totient is φ = 79708860.

The previous prime is 79738657. The next prime is 79738679. The reversal of 79738669 is 96683797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79738669 - 2⁹ = 79738157 is a prime.

It is a super-2 number, since 2×79738669² = 12716510667783122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79738679) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10449 + ... + 16390.

It is an arithmetic number, because the mean of its divisors is an integer number (19942120).

Almost surely, 2^79738669 is an apocalyptic number.

It is an amenable number.

79738669 is a deficient number, since it is larger than the sum of its proper divisors (29811).

79738669 is a wasteful number, since it uses less digits than its factorization.

79738669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29810.

The product of its digits is 3429216, while the sum is 55.

The square root of 79738669 is about 8929.6511130055. The cubic root of 79738669 is about 430.4172423827.

The spelling of 79738669 in words is "seventy-nine million, seven hundred thirty-eight thousand, six hundred sixty-nine".