23866091 has 2 divisors, whose sum is σ = 23866092. Its totient is φ = 23866090.

The previous prime is 23866057. The next prime is 23866121. The reversal of 23866091 is 19066832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23866091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23866021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11933045 + 11933046.

It is an arithmetic number, because the mean of its divisors is an integer number (11933046).

Almost surely, 2^23866091 is an apocalyptic number.

23866091 is a deficient number, since it is larger than the sum of its proper divisors (1).

23866091 is an equidigital number, since it uses as much as digits as its factorization.

23866091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23866091 is about 4885.2933381733. The cubic root of 23866091 is about 287.9124404283.

The spelling of 23866091 in words is "twenty-three million, eight hundred sixty-six thousand, ninety-one".