23664939 has 8 divisors (see below), whose sum is σ = 31997952. Its totient is φ = 15554280.

The previous prime is 23664929. The next prime is 23664943. The reversal of 23664939 is 93946632.

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

It is not a de Polignac number, because 23664939 - 2⁹ = 23664427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23664939.

It is not an unprimeable number, because it can be changed into a prime (23664919) 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, 55339 + ... + 55764.

It is an arithmetic number, because the mean of its divisors is an integer number (3999744).

Almost surely, 2^23664939 is an apocalyptic number.

23664939 is a deficient number, since it is larger than the sum of its proper divisors (8333013).

23664939 is a wasteful number, since it uses less digits than its factorization.

23664939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111177.

The product of its digits is 209952, while the sum is 42.

The square root of 23664939 is about 4864.6622698806. The cubic root of 23664939 is about 287.1012806882.

The spelling of 23664939 in words is "twenty-three million, six hundred sixty-four thousand, nine hundred thirty-nine".