23998589 has 2 divisors, whose sum is σ = 23998590. Its totient is φ = 23998588.

The previous prime is 23998567. The next prime is 23998603. The reversal of 23998589 is 98589932.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17081689 + 6916900 = 4133^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 23998589 - 2⁸ = 23998333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23998589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23998519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11999294 + 11999295.

It is an arithmetic number, because the mean of its divisors is an integer number (11999295).

Almost surely, 2^23998589 is an apocalyptic number.

It is an amenable number.

23998589 is a deficient number, since it is larger than the sum of its proper divisors (1).

23998589 is an equidigital number, since it uses as much as digits as its factorization.

23998589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 23998589 is about 4898.8354738652. The cubic root of 23998589 is about 288.4442611336. Note that the first 3 decimals are identical.

The spelling of 23998589 in words is "twenty-three million, nine hundred ninety-eight thousand, five hundred eighty-nine".