23985887 has 2 divisors, whose sum is σ = 23985888. Its totient is φ = 23985886.

The previous prime is 23985881. The next prime is 23985889. The reversal of 23985887 is 78858932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23985887 - 2¹⁸ = 23723743 is a prime.

Together with 23985889, 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 (23985881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992943 + 11992944.

It is an arithmetic number, because the mean of its divisors is an integer number (11992944).

Almost surely, 2^23985887 is an apocalyptic number.

23985887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23985887 is an equidigital number, since it uses as much as digits as its factorization.

23985887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 50.

The square root of 23985887 is about 4897.5388717191. The cubic root of 23985887 is about 288.3933627858.

The spelling of 23985887 in words is "twenty-three million, nine hundred eighty-five thousand, eight hundred eighty-seven".