23859939 has 4 divisors (see below), whose sum is σ = 31813256. Its totient is φ = 15906624.

The previous prime is 23859929. The next prime is 23859961. The reversal of 23859939 is 93995832.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23859939 - 2⁴ = 23859923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23859929) 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, 3976654 + ... + 3976659.

It is an arithmetic number, because the mean of its divisors is an integer number (7953314).

Almost surely, 2^23859939 is an apocalyptic number.

23859939 is a deficient number, since it is larger than the sum of its proper divisors (7953317).

23859939 is an equidigital number, since it uses as much as digits as its factorization.

23859939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7953316.

The product of its digits is 524880, while the sum is 48.

The square root of 23859939 is about 4884.6636526991. The cubic root of 23859939 is about 287.8876997541.

The spelling of 23859939 in words is "twenty-three million, eight hundred fifty-nine thousand, nine hundred thirty-nine".