23869891 has 2 divisors, whose sum is σ = 23869892. Its totient is φ = 23869890.

The previous prime is 23869877. The next prime is 23869927. The reversal of 23869891 is 19896832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23869891 - 2⁷ = 23869763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23869841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11934945 + 11934946.

It is an arithmetic number, because the mean of its divisors is an integer number (11934946).

Almost surely, 2^23869891 is an apocalyptic number.

23869891 is a deficient number, since it is larger than the sum of its proper divisors (1).

23869891 is an equidigital number, since it uses as much as digits as its factorization.

23869891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 23869891 is about 4885.6822450913. The cubic root of 23869891 is about 287.9277202551.

It can be divided in two parts, 2 and 3869891, that added together give a cube (3869893 = 157³).

The spelling of 23869891 in words is "twenty-three million, eight hundred sixty-nine thousand, eight hundred ninety-one".