23705399 has 2 divisors, whose sum is σ = 23705400. Its totient is φ = 23705398.

The previous prime is 23705377. The next prime is 23705401. The reversal of 23705399 is 99350732.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23705399 is a prime.

Together with 23705401, 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 (23705309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11852699 + 11852700.

It is an arithmetic number, because the mean of its divisors is an integer number (11852700).

Almost surely, 2^23705399 is an apocalyptic number.

23705399 is a deficient number, since it is larger than the sum of its proper divisors (1).

23705399 is an equidigital number, since it uses as much as digits as its factorization.

23705399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 23705399 is about 4868.8190559929. The cubic root of 23705399 is about 287.2648067673.

The spelling of 23705399 in words is "twenty-three million, seven hundred five thousand, three hundred ninety-nine".