79809923 has 8 divisors (see below), whose sum is σ = 80510976. Its totient is φ = 79112200.

The previous prime is 79809907. The next prime is 79809929. The reversal of 79809923 is 32990897.

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

It is not a de Polignac number, because 79809923 - 2⁴ = 79809907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79809929) 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, 72608 + ... + 73698.

It is an arithmetic number, because the mean of its divisors is an integer number (10063872).

Almost surely, 2^79809923 is an apocalyptic number.

79809923 is a deficient number, since it is larger than the sum of its proper divisors (701053).

79809923 is a wasteful number, since it uses less digits than its factorization.

79809923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 79809923 is about 8933.6399636430. The cubic root of 79809923 is about 430.5454103089.

The spelling of 79809923 in words is "seventy-nine million, eight hundred nine thousand, nine hundred twenty-three".