79163909 has 8 divisors (see below), whose sum is σ = 87777120. Its totient is φ = 70786800.

The previous prime is 79163879. The next prime is 79163947. The reversal of 79163909 is 90936197.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79163909 - 2¹⁶ = 79098373 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 79163909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79163969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58319 + ... + 59660.

It is an arithmetic number, because the mean of its divisors is an integer number (10972140).

Almost surely, 2^79163909 is an apocalyptic number.

It is an amenable number.

79163909 is a deficient number, since it is larger than the sum of its proper divisors (8613211).

79163909 is a wasteful number, since it uses less digits than its factorization.

79163909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118051.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 79163909 is about 8897.4102411882. The cubic root of 79163909 is about 429.3805918658.

The spelling of 79163909 in words is "seventy-nine million, one hundred sixty-three thousand, nine hundred nine".