23243489 has 2 divisors, whose sum is σ = 23243490. Its totient is φ = 23243488.

The previous prime is 23243453. The next prime is 23243497. The reversal of 23243489 is 98434232.

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., 23203489 + 40000 = 4817^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23243489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23243089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11621744 + 11621745.

It is an arithmetic number, because the mean of its divisors is an integer number (11621745).

Almost surely, 2^23243489 is an apocalyptic number.

It is an amenable number.

23243489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243489 is an equidigital number, since it uses as much as digits as its factorization.

23243489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 23243489 is about 4821.1501739730. The cubic root of 23243489 is about 285.3867285083.

It can be divided in two parts, 23243 and 489, that added together give a palindrome (23732).

The spelling of 23243489 in words is "twenty-three million, two hundred forty-three thousand, four hundred eighty-nine".