200043209 has 2 divisors, whose sum is σ = 200043210. Its totient is φ = 200043208.

The previous prime is 200043163. The next prime is 200043227. The reversal of 200043209 is 902340002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151782400 + 48260809 = 12320^2 + 6947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200043209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200043269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100021604 + 100021605.

It is an arithmetic number, because the mean of its divisors is an integer number (100021605).

Almost surely, 2^200043209 is an apocalyptic number.

It is an amenable number.

200043209 is a deficient number, since it is larger than the sum of its proper divisors (1).

200043209 is an equidigital number, since it uses as much as digits as its factorization.

200043209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 200043209 is about 14143.6632100740. The cubic root of 200043209 is about 584.8456592375.

The spelling of 200043209 in words is "two hundred million, forty-three thousand, two hundred nine".