23989489 has 2 divisors, whose sum is σ = 23989490. Its totient is φ = 23989488.

The previous prime is 23989481. The next prime is 23989513. The reversal of 23989489 is 98498932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 5841889 = 4260^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 23989489 - 2³ = 23989481 is a prime.

It is a super-2 number, since 2×23989489² = 1150991164962242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23989481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11994744 + 11994745.

It is an arithmetic number, because the mean of its divisors is an integer number (11994745).

Almost surely, 2^23989489 is an apocalyptic number.

It is an amenable number.

23989489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23989489 is an equidigital number, since it uses as much as digits as its factorization.

23989489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 52.

The square root of 23989489 is about 4897.9065936377. The cubic root of 23989489 is about 288.4077982314.

The spelling of 23989489 in words is "twenty-three million, nine hundred eighty-nine thousand, four hundred eighty-nine".