200209 has 4 divisors (see below), whose sum is σ = 212004. Its totient is φ = 188416.

The previous prime is 200201. The next prime is 200227. The reversal of 200209 is 902002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 51984 = 385^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 200209 - 2³ = 200201 is a prime.

It is a magnanimous number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5872 + ... + 5905.

It is an arithmetic number, because the mean of its divisors is an integer number (53001).

2²⁰⁰²⁰⁹ is an apocalyptic number.

It is an amenable number.

200209 is a deficient number, since it is larger than the sum of its proper divisors (11795).

200209 is a wasteful number, since it uses less digits than its factorization.

200209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11794.

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

The square root of 200209 is about 447.4472035894. The cubic root of 200209 is about 58.5007183295.

The spelling of 200209 in words is "two hundred thousand, two hundred nine".