79338689 has 4 divisors (see below), whose sum is σ = 79396800. Its totient is φ = 79280580.

The previous prime is 79338671. The next prime is 79338739. The reversal of 79338689 is 98683397.

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 a de Polignac number, because none of the positive numbers 2^k-79338689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79338689.

It is not an unprimeable number, because it can be changed into a prime (79338659) 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, 26957 + ... + 29754.

It is an arithmetic number, because the mean of its divisors is an integer number (19849200).

Almost surely, 2^79338689 is an apocalyptic number.

It is an amenable number.

79338689 is a deficient number, since it is larger than the sum of its proper divisors (58111).

79338689 is a wasteful number, since it uses less digits than its factorization.

79338689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58110.

The product of its digits is 1959552, while the sum is 53.

The square root of 79338689 is about 8907.2267850325. The cubic root of 79338689 is about 429.6963585585.

The spelling of 79338689 in words is "seventy-nine million, three hundred thirty-eight thousand, six hundred eighty-nine".