2000209 has 2 divisors, whose sum is σ = 2000210. Its totient is φ = 2000208.

The previous prime is 2000177. The next prime is 2000221. The reversal of 2000209 is 9020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 595984 = 1185^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000209 - 2⁵ = 2000177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2000249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000104 + 1000105.

It is an arithmetic number, because the mean of its divisors is an integer number (1000105).

2^2000209 is an apocalyptic number.

It is an amenable number.

2000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000209 is an equidigital number, since it uses as much as digits as its factorization.

2000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2000209 is about 1414.2874531014. The cubic root of 2000209 is about 125.9964935616.

It can be divided in two parts, 2000 and 209, that added together give a square (2209 = 47²).

The spelling of 2000209 in words is "two million, two hundred nine", and thus it is an aban number.