23997899 has 4 divisors (see below), whose sum is σ = 24047664. Its totient is φ = 23948136.

The previous prime is 23997887. The next prime is 23997907. The reversal of 23997899 is 99879932.

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

It is a cyclic number.

It is not a de Polignac number, because 23997899 - 2⁸ = 23997643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23997839) 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, 24152 + ... + 25125.

It is an arithmetic number, because the mean of its divisors is an integer number (6011916).

Almost surely, 2^23997899 is an apocalyptic number.

23997899 is a deficient number, since it is larger than the sum of its proper divisors (49765).

23997899 is an equidigital number, since it uses as much as digits as its factorization.

23997899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49764.

The product of its digits is 2204496, while the sum is 56.

The square root of 23997899 is about 4898.7650484586. The cubic root of 23997899 is about 288.4414966871.

The spelling of 23997899 in words is "twenty-three million, nine hundred ninety-seven thousand, eight hundred ninety-nine".