199890202 has 16 divisors (see below), whose sum is σ = 302800680. Its totient is φ = 98961408.

The previous prime is 199890179. The next prime is 199890209. The reversal of 199890202 is 202098991.

199890202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 130850721 + 69039481 = 11439^2 + 8309^2 .

It is not an unprimeable number, because it can be changed into a prime (199890209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104874 + ... + 106762.

Almost surely, 2^199890202 is an apocalyptic number.

199890202 is a deficient number, since it is larger than the sum of its proper divisors (102910478).

199890202 is a wasteful number, since it uses less digits than its factorization.

199890202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 199890202 is about 14138.2531452793. The cubic root of 199890202 is about 584.6965109530.

The spelling of 199890202 in words is "one hundred ninety-nine million, eight hundred ninety thousand, two hundred two".