23408999 has 6 divisors (see below), whose sum is σ = 24189480. Its totient is φ = 22652940.

The previous prime is 23408989. The next prime is 23409011. The reversal of 23408999 is 99980432.

It is not a de Polignac number, because 23408999 - 2⁸ = 23408743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23408989) 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 in 5 ways as a sum of consecutive naturals, for example, 11219 + ... + 13140.

It is an arithmetic number, because the mean of its divisors is an integer number (4031580).

Almost surely, 2^23408999 is an apocalyptic number.

23408999 is a deficient number, since it is larger than the sum of its proper divisors (780481).

23408999 is an equidigital number, since it uses as much as digits as its factorization.

23408999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24421 (or 24390 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 23408999 is about 4838.2847167152. The cubic root of 23408999 is about 286.0625118055.

The spelling of 23408999 in words is "twenty-three million, four hundred eight thousand, nine hundred ninety-nine".