23169979 has 4 divisors (see below), whose sum is σ = 26479984. Its totient is φ = 19859976.

The previous prime is 23169977. The next prime is 23169983. The reversal of 23169979 is 97996132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23169979 - 2¹ = 23169977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23169973) 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, 1654992 + ... + 1655005.

It is an arithmetic number, because the mean of its divisors is an integer number (6619996).

Almost surely, 2^23169979 is an apocalyptic number.

23169979 is a deficient number, since it is larger than the sum of its proper divisors (3310005).

23169979 is an equidigital number, since it uses as much as digits as its factorization.

23169979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310004.

The product of its digits is 183708, while the sum is 46.

The square root of 23169979 is about 4813.5204372683. The cubic root of 23169979 is about 285.0855555186.

The spelling of 23169979 in words is "twenty-three million, one hundred sixty-nine thousand, nine hundred seventy-nine".