200345909 has 2 divisors, whose sum is σ = 200345910. Its totient is φ = 200345908.

The previous prime is 200345897. The next prime is 200345911. The reversal of 200345909 is 909543002.

200345909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116165284 + 84180625 = 10778^2 + 9175^2 .

It is a cyclic number.

It is not a de Polignac number, because 200345909 - 2²⁰ = 199297333 is a prime.

Together with 200345911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200345809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100172954 + 100172955.

It is an arithmetic number, because the mean of its divisors is an integer number (100172955).

Almost surely, 2^200345909 is an apocalyptic number.

It is an amenable number.

200345909 is a deficient number, since it is larger than the sum of its proper divisors (1).

200345909 is an equidigital number, since it uses as much as digits as its factorization.

200345909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 200345909 is about 14154.3600703105. The cubic root of 200345909 is about 585.1405014755.

The spelling of 200345909 in words is "two hundred million, three hundred forty-five thousand, nine hundred nine".