23174989 has 2 divisors, whose sum is σ = 23174990. Its totient is φ = 23174988.

The previous prime is 23174981. The next prime is 23175001. The reversal of 23174989 is 98947132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12482089 + 10692900 = 3533^2 + 3270^2 .

It is a cyclic number.

It is not a de Polignac number, because 23174989 - 2³ = 23174981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23174981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11587494 + 11587495.

It is an arithmetic number, because the mean of its divisors is an integer number (11587495).

Almost surely, 2^23174989 is an apocalyptic number.

It is an amenable number.

23174989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23174989 is an equidigital number, since it uses as much as digits as its factorization.

23174989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 23174989 is about 4814.0408182731. The cubic root of 23174989 is about 285.1061018716.

The spelling of 23174989 in words is "twenty-three million, one hundred seventy-four thousand, nine hundred eighty-nine".