23985791 has 2 divisors, whose sum is σ = 23985792. Its totient is φ = 23985790.

The previous prime is 23985781. The next prime is 23985817. The reversal of 23985791 is 19758932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23985791 - 2¹⁰ = 23984767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23985721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992895 + 11992896.

It is an arithmetic number, because the mean of its divisors is an integer number (11992896).

Almost surely, 2^23985791 is an apocalyptic number.

23985791 is a deficient number, since it is larger than the sum of its proper divisors (1).

23985791 is an equidigital number, since it uses as much as digits as its factorization.

23985791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 23985791 is about 4897.5290708683. The cubic root of 23985791 is about 288.3929780345.

The spelling of 23985791 in words is "twenty-three million, nine hundred eighty-five thousand, seven hundred ninety-one".