23889449 has 2 divisors, whose sum is σ = 23889450. Its totient is φ = 23889448.

The previous prime is 23889419. The next prime is 23889461. The reversal of 23889449 is 94498832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22733824 + 1155625 = 4768^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 23889449 - 2⁸ = 23889193 is a prime.

It is not a weakly prime, because it can be changed into another prime (23889419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11944724 + 11944725.

It is an arithmetic number, because the mean of its divisors is an integer number (11944725).

Almost surely, 2^23889449 is an apocalyptic number.

It is an amenable number.

23889449 is a deficient number, since it is larger than the sum of its proper divisors (1).

23889449 is an equidigital number, since it uses as much as digits as its factorization.

23889449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 47.

The square root of 23889449 is about 4887.6833980936. The cubic root of 23889449 is about 288.0063374699.

The spelling of 23889449 in words is "twenty-three million, eight hundred eighty-nine thousand, four hundred forty-nine".