23993399 has 2 divisors, whose sum is σ = 23993400. Its totient is φ = 23993398.

The previous prime is 23993377. The next prime is 23993419. The reversal of 23993399 is 99339932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23993399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23993309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11996699 + 11996700.

It is an arithmetic number, because the mean of its divisors is an integer number (11996700).

Almost surely, 2^23993399 is an apocalyptic number.

23993399 is a deficient number, since it is larger than the sum of its proper divisors (1).

23993399 is an equidigital number, since it uses as much as digits as its factorization.

23993399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 354294, while the sum is 47.

The square root of 23993399 is about 4898.3057274939. The cubic root of 23993399 is about 288.4234663882.

The spelling of 23993399 in words is "twenty-three million, nine hundred ninety-three thousand, three hundred ninety-nine".