23970239 has 4 divisors (see below), whose sum is σ = 24307920. Its totient is φ = 23632560.

The previous prime is 23970217. The next prime is 23970251. The reversal of 23970239 is 93207932.

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 23970239 - 2²⁰ = 22921663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23970199 and 23970208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978239) 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, 168734 + ... + 168875.

It is an arithmetic number, because the mean of its divisors is an integer number (6076980).

Almost surely, 2^23970239 is an apocalyptic number.

23970239 is a deficient number, since it is larger than the sum of its proper divisors (337681).

23970239 is an equidigital number, since it uses as much as digits as its factorization.

23970239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337680.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 23970239 is about 4895.9410739918. The cubic root of 23970239 is about 288.3306347734.

The spelling of 23970239 in words is "twenty-three million, nine hundred seventy thousand, two hundred thirty-nine".