204423229 has 2 divisors, whose sum is σ = 204423230. Its totient is φ = 204423228.

The previous prime is 204423221. The next prime is 204423239. The reversal of 204423229 is 922324402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128210329 + 76212900 = 11323^2 + 8730^2 .

It is a cyclic number.

It is not a de Polignac number, because 204423229 - 2³ = 204423221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204423197 and 204423206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204423221) 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, 102211614 + 102211615.

It is an arithmetic number, because the mean of its divisors is an integer number (102211615).

Almost surely, 2^204423229 is an apocalyptic number.

It is an amenable number.

204423229 is a deficient number, since it is larger than the sum of its proper divisors (1).

204423229 is an equidigital number, since it uses as much as digits as its factorization.

204423229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 204423229 is about 14297.6651590391. The cubic root of 204423229 is about 589.0833501226.

The spelling of 204423229 in words is "two hundred four million, four hundred twenty-three thousand, two hundred twenty-nine".