23959 has 8 divisors (see below), whose sum is σ = 27440. Its totient is φ = 20736.

The previous prime is 23957. The next prime is 23971. The reversal of 23959 is 95932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 8-Lehmer number, since φ(23959) divides (23959-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 23959 - 2¹ = 23957 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199 + ... + 295.

It is an arithmetic number, because the mean of its divisors is an integer number (3430).

2²³⁹⁵⁹ is an apocalyptic number.

23959 is a deficient number, since it is larger than the sum of its proper divisors (3481).

23959 is a wasteful number, since it uses less digits than its factorization.

23959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129.

The product of its digits is 2430, while the sum is 28.

The square root of 23959 is about 154.7869503543. The cubic root of 23959 is about 28.8285564237.

The spelling of 23959 in words is "twenty-three thousand, nine hundred fifty-nine".