199287 has 24 divisors (see below), whose sum is σ = 329840. Its totient is φ = 118800.

The previous prime is 199267. The next prime is 199289. The reversal of 199287 is 782991.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-199287 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

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 23 ways as a sum of consecutive naturals, for example, 3237 + ... + 3297.

2¹⁹⁹²⁸⁷ is an apocalyptic number.

199287 is a deficient number, since it is larger than the sum of its proper divisors (130553).

199287 is a wasteful number, since it uses less digits than its factorization.

199287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 75 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 199287 is about 446.4157255295. The cubic root of 199287 is about 58.4107778632.

The spelling of 199287 in words is "one hundred ninety-nine thousand, two hundred eighty-seven".