23444539 has 2 divisors, whose sum is σ = 23444540. Its totient is φ = 23444538.

The previous prime is 23444527. The next prime is 23444543. The reversal of 23444539 is 93544432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23444539 is a prime.

It is not a weakly prime, because it can be changed into another prime (23444549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722269 + 11722270.

It is an arithmetic number, because the mean of its divisors is an integer number (11722270).

Almost surely, 2^23444539 is an apocalyptic number.

23444539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23444539 is an equidigital number, since it uses as much as digits as its factorization.

23444539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 34.

The square root of 23444539 is about 4841.9561129775. The cubic root of 23444539 is about 286.2072071700.

The spelling of 23444539 in words is "twenty-three million, four hundred forty-four thousand, five hundred thirty-nine".