200371993 has 2 divisors, whose sum is σ = 200371994. Its totient is φ = 200371992.

The previous prime is 200371987. The next prime is 200372033. The reversal of 200371993 is 399173002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187498249 + 12873744 = 13693^2 + 3588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200371993 is a prime.

It is not a weakly prime, because it can be changed into another prime (200371903) 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, 100185996 + 100185997.

It is an arithmetic number, because the mean of its divisors is an integer number (100185997).

Almost surely, 2^200371993 is an apocalyptic number.

It is an amenable number.

200371993 is a deficient number, since it is larger than the sum of its proper divisors (1).

200371993 is an equidigital number, since it uses as much as digits as its factorization.

200371993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 200371993 is about 14155.2814525180. The cubic root of 200371993 is about 585.1658944614.

The spelling of 200371993 in words is "two hundred million, three hundred seventy-one thousand, nine hundred ninety-three".