200117609 has 2 divisors, whose sum is σ = 200117610. Its totient is φ = 200117608.

The previous prime is 200117563. The next prime is 200117623. The reversal of 200117609 is 906711002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152893225 + 47224384 = 12365^2 + 6872^2 .

It is a cyclic number.

It is not a de Polignac number, because 200117609 - 2²⁰ = 199069033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (200117629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100058804 + 100058805.

It is an arithmetic number, because the mean of its divisors is an integer number (100058805).

Almost surely, 2^200117609 is an apocalyptic number.

It is an amenable number.

200117609 is a deficient number, since it is larger than the sum of its proper divisors (1).

200117609 is an equidigital number, since it uses as much as digits as its factorization.

200117609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 200117609 is about 14146.2931186937. The cubic root of 200117609 is about 584.9181554481.

The spelling of 200117609 in words is "two hundred million, one hundred seventeen thousand, six hundred nine".