23379921 has 20 divisors (see below), whose sum is σ = 36056064. Its totient is φ = 15082200.

The previous prime is 23379857. The next prime is 23379931. The reversal of 23379921 is 12997332.

It is not a de Polignac number, because 23379921 - 2⁶ = 23379857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23379931) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2145 + ... + 7166.

Almost surely, 2^23379921 is an apocalyptic number.

It is an amenable number.

23379921 is a deficient number, since it is larger than the sum of its proper divisors (12676143).

23379921 is an equidigital number, since it uses as much as digits as its factorization.

23379921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354 (or 9345 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 23379921 is about 4835.2787923759. The cubic root of 23379921 is about 285.9440164599.

The spelling of 23379921 in words is "twenty-three million, three hundred seventy-nine thousand, nine hundred twenty-one".