23879881 has 2 divisors, whose sum is σ = 23879882. Its totient is φ = 23879880.

The previous prime is 23879851. The next prime is 23879887. The reversal of 23879881 is 18897832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 1648656 = 4715^2 + 1284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23879881 is a prime.

It is a super-2 number, since 2×23879881² = 1140497433148322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23879887) 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, 11939940 + 11939941.

It is an arithmetic number, because the mean of its divisors is an integer number (11939941).

Almost surely, 2^23879881 is an apocalyptic number.

It is an amenable number.

23879881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23879881 is an equidigital number, since it uses as much as digits as its factorization.

23879881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 46.

The square root of 23879881 is about 4886.7045132686. The cubic root of 23879881 is about 287.9678823816.

The spelling of 23879881 in words is "twenty-three million, eight hundred seventy-nine thousand, eight hundred eighty-one".