199874 has 12 divisors (see below), whose sum is σ = 312354. Its totient is φ = 95904.

The previous prime is 199873. The next prime is 199877. The reversal of 199874 is 478991.

It can be written as a sum of positive squares in 3 ways, for example, as 198025 + 1849 = 445^2 + 43^2 .

Its product of digits (18144) is a multiple of the sum of its prime divisors (112).

It is not an unprimeable number, because it can be changed into a prime (199873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2702 + ... + 2774.

2¹⁹⁹⁸⁷⁴ is an apocalyptic number.

199874 is a deficient number, since it is larger than the sum of its proper divisors (112480).

199874 is an equidigital number, since it uses as much as digits as its factorization.

199874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 112 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 199874 is about 447.0727010230. The cubic root of 199874 is about 58.4680713099.

It can be divided in two parts, 19987 and 4, that added together give a palindrome (19991).

The spelling of 199874 in words is "one hundred ninety-nine thousand, eight hundred seventy-four".