204444109 has 2 divisors, whose sum is σ = 204444110. Its totient is φ = 204444108.

The previous prime is 204444041. The next prime is 204444127. The reversal of 204444109 is 901444402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115670025 + 88774084 = 10755^2 + 9422^2 .

It is a cyclic number.

It is not a de Polignac number, because 204444109 - 2¹⁷ = 204313037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204444169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102222054 + 102222055.

It is an arithmetic number, because the mean of its divisors is an integer number (102222055).

Almost surely, 2^204444109 is an apocalyptic number.

It is an amenable number.

204444109 is a deficient number, since it is larger than the sum of its proper divisors (1).

204444109 is an equidigital number, since it uses as much as digits as its factorization.

204444109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 204444109 is about 14298.3953295466. The cubic root of 204444109 is about 589.1034059673.

The spelling of 204444109 in words is "two hundred four million, four hundred forty-four thousand, one hundred nine".