79906089 has 8 divisors (see below), whose sum is σ = 109140192. Its totient is φ = 51971360.

The previous prime is 79905983. The next prime is 79906097. The reversal of 79906089 is 98060997.

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 79906089 - 2¹³ = 79897897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79902089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324699 + ... + 324944.

It is an arithmetic number, because the mean of its divisors is an integer number (13642524).

Almost surely, 2^79906089 is an apocalyptic number.

It is an amenable number.

79906089 is a deficient number, since it is larger than the sum of its proper divisors (29234103).

79906089 is a wasteful number, since it uses less digits than its factorization.

79906089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649687.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 79906089 is about 8939.0205839342. The cubic root of 79906089 is about 430.7182677257.

The spelling of 79906089 in words is "seventy-nine million, nine hundred six thousand, eighty-nine".