199285 has 4 divisors (see below), whose sum is σ = 239148. Its totient is φ = 159424.

The previous prime is 199267. The next prime is 199289. The reversal of 199285 is 582991.

199285 is digitally balanced in base 2, because in such base 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: 582991 = 571 ⋅1021.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 53361 = 382^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 199285 - 2¹⁷ = 68213 is a prime.

It is a super-2 number, since 2×199285² = 79429022450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199289) 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, 19924 + ... + 19933.

It is an arithmetic number, because the mean of its divisors is an integer number (59787).

2¹⁹⁹²⁸⁵ is an apocalyptic number.

It is an amenable number.

199285 is a deficient number, since it is larger than the sum of its proper divisors (39863).

199285 is an equidigital number, since it uses as much as digits as its factorization.

199285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39862.

The product of its digits is 6480, while the sum is 34.

The square root of 199285 is about 446.4134854594. The cubic root of 199285 is about 58.4105824633.

It can be divided in two parts, 199 and 285, that added together give a palindrome (484).

The spelling of 199285 in words is "one hundred ninety-nine thousand, two hundred eighty-five".