196800209 has 2 divisors, whose sum is σ = 196800210. Its totient is φ = 196800208.

The previous prime is 196800187. The next prime is 196800277. The reversal of 196800209 is 902008691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123321025 + 73479184 = 11105^2 + 8572^2 .

It is a cyclic number.

It is not a de Polignac number, because 196800209 - 2²⁴ = 180022993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196830209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98400104 + 98400105.

It is an arithmetic number, because the mean of its divisors is an integer number (98400105).

Almost surely, 2^196800209 is an apocalyptic number.

It is an amenable number.

196800209 is a deficient number, since it is larger than the sum of its proper divisors (1).

196800209 is an equidigital number, since it uses as much as digits as its factorization.

196800209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 196800209 is about 14028.5497824971. The cubic root of 196800209 is about 581.6680174278.

The spelling of 196800209 in words is "one hundred ninety-six million, eight hundred thousand, two hundred nine".