23959913 has 4 divisors (see below), whose sum is σ = 24009600. Its totient is φ = 23910228.

The previous prime is 23959909. The next prime is 23959921. The reversal of 23959913 is 31995932.

It is a happy number.

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 23959913 - 2² = 23959909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23959933) 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, 24113 + ... + 25086.

It is an arithmetic number, because the mean of its divisors is an integer number (6002400).

Almost surely, 2^23959913 is an apocalyptic number.

It is an amenable number.

23959913 is a deficient number, since it is larger than the sum of its proper divisors (49687).

23959913 is an equidigital number, since it uses as much as digits as its factorization.

23959913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49686.

The product of its digits is 65610, while the sum is 41.

The square root of 23959913 is about 4894.8864133910. The cubic root of 23959913 is about 288.2892260671.

The spelling of 23959913 in words is "twenty-three million, nine hundred fifty-nine thousand, nine hundred thirteen".