23003809 has 2 divisors, whose sum is σ = 23003810. Its totient is φ = 23003808.

The previous prime is 23003801. The next prime is 23003819. The reversal of 23003809 is 90830032.

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., 22896225 + 107584 = 4785^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 23003809 - 2³ = 23003801 is a prime.

It is not a weakly prime, because it can be changed into another prime (23003801) 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, 11501904 + 11501905.

It is an arithmetic number, because the mean of its divisors is an integer number (11501905).

Almost surely, 2^23003809 is an apocalyptic number.

It is an amenable number.

23003809 is a deficient number, since it is larger than the sum of its proper divisors (1).

23003809 is an equidigital number, since it uses as much as digits as its factorization.

23003809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 23003809 is about 4796.2286225742. The cubic root of 23003809 is about 284.4023960886.

The spelling of 23003809 in words is "twenty-three million, three thousand, eight hundred nine".