23881859 has 2 divisors, whose sum is σ = 23881860. Its totient is φ = 23881858.

The previous prime is 23881849. The next prime is 23881883. The reversal of 23881859 is 95818832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23881859 - 2⁸ = 23881603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23881849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11940929 + 11940930.

It is an arithmetic number, because the mean of its divisors is an integer number (11940930).

Almost surely, 2^23881859 is an apocalyptic number.

23881859 is a deficient number, since it is larger than the sum of its proper divisors (1).

23881859 is an equidigital number, since it uses as much as digits as its factorization.

23881859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 23881859 is about 4886.9068949592. The cubic root of 23881859 is about 287.9758330737.

The spelling of 23881859 in words is "twenty-three million, eight hundred eighty-one thousand, eight hundred fifty-nine".