199884 has 12 divisors (see below), whose sum is σ = 466424. Its totient is φ = 66624.

The previous prime is 199877. The next prime is 199889. The reversal of 199884 is 488991.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×199884² = 79907226912, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (199889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8317 + ... + 8340.

2¹⁹⁹⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

199884 is an abundant number, since it is smaller than the sum of its proper divisors (266540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199884 is a wasteful number, since it uses less digits than its factorization.

199884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664 (or 16662 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 199884 is about 447.0838847465. The cubic root of 199884 is about 58.4690463758.

The spelling of 199884 in words is "one hundred ninety-nine thousand, eight hundred eighty-four".