199982 has 4 divisors (see below), whose sum is σ = 299976. Its totient is φ = 99990.

The previous prime is 199967. The next prime is 199999. The reversal of 199982 is 289991.

199982 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289991 = 13 ⋅22307.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994 + ... + 49997.

It is an arithmetic number, because the mean of its divisors is an integer number (74994).

2¹⁹⁹⁹⁸² is an apocalyptic number.

199982 is a deficient number, since it is larger than the sum of its proper divisors (99994).

199982 is an equidigital number, since it uses as much as digits as its factorization.

199982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99993.

The product of its digits is 11664, while the sum is 38.

The square root of 199982 is about 447.1934704353. The cubic root of 199982 is about 58.4786003010.

Subtracting 199982 from its reverse (289991), we obtain a palindrome (90009).

It can be divided in two parts, 19 and 9982, that added together give a palindrome (10001).

The spelling of 199982 in words is "one hundred ninety-nine thousand, nine hundred eighty-two".