199385 has 4 divisors (see below), whose sum is σ = 239268. Its totient is φ = 159504.

The previous prime is 199379. The next prime is 199399. The reversal of 199385 is 583991.

199385 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.

It can be written as a sum of positive squares in 2 ways, for example, as 48841 + 150544 = 221^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 199385 - 2⁶ = 199321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9 and base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19934 + ... + 19943.

It is an arithmetic number, because the mean of its divisors is an integer number (59817).

2¹⁹⁹³⁸⁵ is an apocalyptic number.

It is an amenable number.

199385 is a deficient number, since it is larger than the sum of its proper divisors (39883).

199385 is an equidigital number, since it uses as much as digits as its factorization.

199385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39882.

The product of its digits is 9720, while the sum is 35.

The square root of 199385 is about 446.5254751971. The cubic root of 199385 is about 58.4203508545.

The spelling of 199385 in words is "one hundred ninety-nine thousand, three hundred eighty-five".