23399911 has 2 divisors, whose sum is σ = 23399912. Its totient is φ = 23399910.

The previous prime is 23399903. The next prime is 23399921. The reversal of 23399911 is 11999332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23399911 - 2³ = 23399903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23399921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11699955 + 11699956.

It is an arithmetic number, because the mean of its divisors is an integer number (11699956).

Almost surely, 2^23399911 is an apocalyptic number.

23399911 is a deficient number, since it is larger than the sum of its proper divisors (1).

23399911 is an equidigital number, since it uses as much as digits as its factorization.

23399911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 37.

The square root of 23399911 is about 4837.3454497276. The cubic root of 23399911 is about 286.0254879725.

It can be divided in two parts, 23399 and 911, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 23399911 in words is "twenty-three million, three hundred ninety-nine thousand, nine hundred eleven".