79965789 has 8 divisors (see below), whose sum is σ = 110297760. Its totient is φ = 51472176.

The previous prime is 79965763. The next prime is 79965791. The reversal of 79965789 is 98756997.

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

It is not a de Polignac number, because 79965789 - 2⁵ = 79965757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79965799) 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 7 ways as a sum of consecutive naturals, for example, 459487 + ... + 459660.

It is an arithmetic number, because the mean of its divisors is an integer number (13787220).

Almost surely, 2^79965789 is an apocalyptic number.

It is an amenable number.

79965789 is a deficient number, since it is larger than the sum of its proper divisors (30331971).

79965789 is a wasteful number, since it uses less digits than its factorization.

79965789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919179.

The product of its digits is 8573040, while the sum is 60.

The square root of 79965789 is about 8942.3592524568. The cubic root of 79965789 is about 430.8255081113.

The spelling of 79965789 in words is "seventy-nine million, nine hundred sixty-five thousand, seven hundred eighty-nine".