23990899 has 2 divisors, whose sum is σ = 23990900. Its totient is φ = 23990898.

The previous prime is 23990887. The next prime is 23990921. The reversal of 23990899 is 99809932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23990899 - 2⁵ = 23990867 is a prime.

It is not a weakly prime, because it can be changed into another prime (23990809) 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 as a sum of consecutive naturals, namely, 11995449 + 11995450.

It is an arithmetic number, because the mean of its divisors is an integer number (11995450).

Almost surely, 2^23990899 is an apocalyptic number.

23990899 is a deficient number, since it is larger than the sum of its proper divisors (1).

23990899 is an equidigital number, since it uses as much as digits as its factorization.

23990899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 23990899 is about 4898.0505305683. The cubic root of 23990899 is about 288.4134485814.

The spelling of 23990899 in words is "twenty-three million, nine hundred ninety thousand, eight hundred ninety-nine".