23908091 has 2 divisors, whose sum is σ = 23908092. Its totient is φ = 23908090.

The previous prime is 23908057. The next prime is 23908097. The reversal of 23908091 is 19080932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23908091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23908097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11954045 + 11954046.

It is an arithmetic number, because the mean of its divisors is an integer number (11954046).

Almost surely, 2^23908091 is an apocalyptic number.

23908091 is a deficient number, since it is larger than the sum of its proper divisors (1).

23908091 is an equidigital number, since it uses as much as digits as its factorization.

23908091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 23908091 is about 4889.5900646169. The cubic root of 23908091 is about 288.0812327118.

It can be divided in two parts, 2 and 3908091, that added together give a palindrome (3908093).

The spelling of 23908091 in words is "twenty-three million, nine hundred eight thousand, ninety-one".