23539889 has 2 divisors, whose sum is σ = 23539890. Its totient is φ = 23539888.

The previous prime is 23539871. The next prime is 23539907. The reversal of 23539889 is 98893532.

It is a balanced prime because it is at equal distance from previous prime (23539871) and next prime (23539907).

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 336400 = 4817^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 23539889 - 2¹² = 23535793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23539829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11769944 + 11769945.

It is an arithmetic number, because the mean of its divisors is an integer number (11769945).

Almost surely, 2^23539889 is an apocalyptic number.

It is an amenable number.

23539889 is a deficient number, since it is larger than the sum of its proper divisors (1).

23539889 is an equidigital number, since it uses as much as digits as its factorization.

23539889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 23539889 is about 4851.7923492252. The cubic root of 23539889 is about 286.5946882263.

The spelling of 23539889 in words is "twenty-three million, five hundred thirty-nine thousand, eight hundred eighty-nine".