79364609 has 4 divisors (see below), whose sum is σ = 79400880. Its totient is φ = 79328340.

The previous prime is 79364587. The next prime is 79364611. The reversal of 79364609 is 90646397.

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 79364609 - 2⁸ = 79364353 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 79364609.

It is not an unprimeable number, because it can be changed into a prime (79364669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14627 + ... + 19304.

It is an arithmetic number, because the mean of its divisors is an integer number (19850220).

Almost surely, 2^79364609 is an apocalyptic number.

It is an amenable number.

79364609 is a deficient number, since it is larger than the sum of its proper divisors (36271).

79364609 is a wasteful number, since it uses less digits than its factorization.

79364609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36270.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 79364609 is about 8908.6816645338. The cubic root of 79364609 is about 429.7431474878.

The spelling of 79364609 in words is "seventy-nine million, three hundred sixty-four thousand, six hundred nine".