23438887 has 2 divisors, whose sum is σ = 23438888. Its totient is φ = 23438886.

The previous prime is 23438843. The next prime is 23438893. The reversal of 23438887 is 78883432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23438887 - 2¹⁹ = 22914599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23438897) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11719443 + 11719444.

It is an arithmetic number, because the mean of its divisors is an integer number (11719444).

Almost surely, 2^23438887 is an apocalyptic number.

23438887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23438887 is an equidigital number, since it uses as much as digits as its factorization.

23438887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 23438887 is about 4841.3724293840. The cubic root of 23438887 is about 286.1842057489.

The spelling of 23438887 in words is "twenty-three million, four hundred thirty-eight thousand, eight hundred eighty-seven".