23939261 has 4 divisors (see below), whose sum is σ = 24496032. Its totient is φ = 23382492.

The previous prime is 23939249. The next prime is 23939263. The reversal of 23939261 is 16293932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23939261 - 2¹⁰ = 23938237 is a prime.

It is a super-2 number, since 2×23939261² = 1146176434452242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23939263) 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, 278321 + ... + 278406.

It is an arithmetic number, because the mean of its divisors is an integer number (6124008).

Almost surely, 2^23939261 is an apocalyptic number.

It is an amenable number.

23939261 is a deficient number, since it is larger than the sum of its proper divisors (556771).

23939261 is an equidigital number, since it uses as much as digits as its factorization.

23939261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556770.

The product of its digits is 17496, while the sum is 35.

The square root of 23939261 is about 4892.7764101786. The cubic root of 23939261 is about 288.2063729489.

The spelling of 23939261 in words is "twenty-three million, nine hundred thirty-nine thousand, two hundred sixty-one".