204291229 has 2 divisors, whose sum is σ = 204291230. Its totient is φ = 204291228.

The previous prime is 204291181. The next prime is 204291247. The reversal of 204291229 is 922192402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132296004 + 71995225 = 11502^2 + 8485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204291229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204291229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204291259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102145614 + 102145615.

It is an arithmetic number, because the mean of its divisors is an integer number (102145615).

Almost surely, 2^204291229 is an apocalyptic number.

It is an amenable number.

204291229 is a deficient number, since it is larger than the sum of its proper divisors (1).

204291229 is an equidigital number, since it uses as much as digits as its factorization.

204291229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 204291229 is about 14293.0482752980. The cubic root of 204291229 is about 588.9565286822.

The spelling of 204291229 in words is "two hundred four million, two hundred ninety-one thousand, two hundred twenty-nine".