23438489 has 2 divisors, whose sum is σ = 23438490. Its totient is φ = 23438488.

The previous prime is 23438447. The next prime is 23438507. The reversal of 23438489 is 98483432.

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., 23088025 + 350464 = 4805^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 23438489 - 2²⁴ = 6661273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23438089) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11719244 + 11719245.

It is an arithmetic number, because the mean of its divisors is an integer number (11719245).

Almost surely, 2^23438489 is an apocalyptic number.

It is an amenable number.

23438489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23438489 is an equidigital number, since it uses as much as digits as its factorization.

23438489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 23438489 is about 4841.3313251625. The cubic root of 23438489 is about 286.1825859058.

The spelling of 23438489 in words is "twenty-three million, four hundred thirty-eight thousand, four hundred eighty-nine".