200939999 has 4 divisors (see below), whose sum is σ = 216396936. Its totient is φ = 185483064.

The previous prime is 200939987. The next prime is 200940001. The reversal of 200939999 is 999939002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999939002 = 2 ⋅499969501.

It is not a de Polignac number, because 200939999 - 2⁸ = 200939743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200929999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7728449 + ... + 7728474.

It is an arithmetic number, because the mean of its divisors is an integer number (54099234).

Almost surely, 2^200939999 is an apocalyptic number.

200939999 is a deficient number, since it is larger than the sum of its proper divisors (15456937).

200939999 is a wasteful number, since it uses less digits than its factorization.

200939999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15456936.

The product of its (nonzero) digits is 354294, while the sum is 50.

The square root of 200939999 is about 14175.3306487009. The cubic root of 200939999 is about 585.7183072640.

The spelling of 200939999 in words is "two hundred million, nine hundred thirty-nine thousand, nine hundred ninety-nine".