23897239 has 2 divisors, whose sum is σ = 23897240. Its totient is φ = 23897238.

The previous prime is 23897233. The next prime is 23897261. The reversal of 23897239 is 93279832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23897239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23897195 and 23897204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23897233) 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, 11948619 + 11948620.

It is an arithmetic number, because the mean of its divisors is an integer number (11948620).

Almost surely, 2^23897239 is an apocalyptic number.

23897239 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897239 is an equidigital number, since it uses as much as digits as its factorization.

23897239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 23897239 is about 4888.4802341832. The cubic root of 23897239 is about 288.0376389529.

The spelling of 23897239 in words is "twenty-three million, eight hundred ninety-seven thousand, two hundred thirty-nine".