23415869 has 2 divisors, whose sum is σ = 23415870. Its totient is φ = 23415868.

The previous prime is 23415859. The next prime is 23415893. The reversal of 23415869 is 96851432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14784025 + 8631844 = 3845^2 + 2938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23415869 is a prime.

It is a super-2 number, since 2×23415869² = 1096605842050322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23415829) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11707934 + 11707935.

It is an arithmetic number, because the mean of its divisors is an integer number (11707935).

Almost surely, 2^23415869 is an apocalyptic number.

It is an amenable number.

23415869 is a deficient number, since it is larger than the sum of its proper divisors (1).

23415869 is an equidigital number, since it uses as much as digits as its factorization.

23415869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 23415869 is about 4838.9946269861. The cubic root of 23415869 is about 286.0904933129.

The spelling of 23415869 in words is "twenty-three million, four hundred fifteen thousand, eight hundred sixty-nine".