23990907 has 4 divisors (see below), whose sum is σ = 31987880. Its totient is φ = 15993936.

The previous prime is 23990899. The next prime is 23990921. The reversal of 23990907 is 70909932.

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

It is not a de Polignac number, because 23990907 - 2³ = 23990899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23992907) 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, 3998482 + ... + 3998487.

It is an arithmetic number, because the mean of its divisors is an integer number (7996970).

Almost surely, 2^23990907 is an apocalyptic number.

23990907 is a deficient number, since it is larger than the sum of its proper divisors (7996973).

23990907 is an equidigital number, since it uses as much as digits as its factorization.

23990907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996972.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 23990907 is about 4898.0513472196. The cubic root of 23990907 is about 288.4134806395.

The spelling of 23990907 in words is "twenty-three million, nine hundred ninety thousand, nine hundred seven".