206034209 has 2 divisors, whose sum is σ = 206034210. Its totient is φ = 206034208.

The previous prime is 206034181. The next prime is 206034247. The reversal of 206034209 is 902430602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206008609 + 25600 = 14353^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 206034209 - 2¹⁶ = 205968673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206034709) 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, 103017104 + 103017105.

It is an arithmetic number, because the mean of its divisors is an integer number (103017105).

Almost surely, 2^206034209 is an apocalyptic number.

It is an amenable number.

206034209 is a deficient number, since it is larger than the sum of its proper divisors (1).

206034209 is an equidigital number, since it uses as much as digits as its factorization.

206034209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 206034209 is about 14353.8917719203. The cubic root of 206034209 is about 590.6267485144.

The spelling of 206034209 in words is "two hundred six million, thirty-four thousand, two hundred nine".