23227909 has 2 divisors, whose sum is σ = 23227910. Its totient is φ = 23227908.

The previous prime is 23227901. The next prime is 23227921. The reversal of 23227909 is 90972232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23136100 + 91809 = 4810^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 23227909 - 2³ = 23227901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23227901) 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, 11613954 + 11613955.

It is an arithmetic number, because the mean of its divisors is an integer number (11613955).

Almost surely, 2^23227909 is an apocalyptic number.

It is an amenable number.

23227909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23227909 is an equidigital number, since it uses as much as digits as its factorization.

23227909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 23227909 is about 4819.5341061144. The cubic root of 23227909 is about 285.3229498010.

The spelling of 23227909 in words is "twenty-three million, two hundred twenty-seven thousand, nine hundred nine".