200109997 has 2 divisors, whose sum is σ = 200109998. Its totient is φ = 200109996.

The previous prime is 200109911. The next prime is 200110037. The reversal of 200109997 is 799901002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153611236 + 46498761 = 12394^2 + 6819^2 .

It is a cyclic number.

It is not a de Polignac number, because 200109997 - 2¹¹ = 200107949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200109697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100054998 + 100054999.

It is an arithmetic number, because the mean of its divisors is an integer number (100054999).

Almost surely, 2^200109997 is an apocalyptic number.

It is an amenable number.

200109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200109997 is an equidigital number, since it uses as much as digits as its factorization.

200109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 200109997 is about 14146.0240703881. The cubic root of 200109997 is about 584.9107390535.

The spelling of 200109997 in words is "two hundred million, one hundred nine thousand, nine hundred ninety-seven".