23839997 has 2 divisors, whose sum is σ = 23839998. Its totient is φ = 23839996.

The previous prime is 23839993. The next prime is 23839999. The reversal of 23839997 is 79993832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21631801 + 2208196 = 4651^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 23839997 - 2² = 23839993 is a prime.

Together with 23839999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23839993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11919998 + 11919999.

It is an arithmetic number, because the mean of its divisors is an integer number (11919999).

Almost surely, 2^23839997 is an apocalyptic number.

It is an amenable number.

23839997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23839997 is an equidigital number, since it uses as much as digits as its factorization.

23839997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 23839997 is about 4882.6219390815. The cubic root of 23839997 is about 287.8074724367.

The spelling of 23839997 in words is "twenty-three million, eight hundred thirty-nine thousand, nine hundred ninety-seven".