23959857 has 4 divisors (see below), whose sum is σ = 31946480. Its totient is φ = 15973236.

The previous prime is 23959849. The next prime is 23959877. The reversal of 23959857 is 75895932.

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 not a de Polignac number, because 23959857 - 2³ = 23959849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23959877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3993307 + ... + 3993312.

It is an arithmetic number, because the mean of its divisors is an integer number (7986620).

Almost surely, 2^23959857 is an apocalyptic number.

It is an amenable number.

23959857 is a deficient number, since it is larger than the sum of its proper divisors (7986623).

23959857 is an equidigital number, since it uses as much as digits as its factorization.

23959857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7986622.

The product of its digits is 680400, while the sum is 48.

The square root of 23959857 is about 4894.8806931324. The cubic root of 23959857 is about 288.2890014668.

The spelling of 23959857 in words is "twenty-three million, nine hundred fifty-nine thousand, eight hundred fifty-seven".