199827 has 10 divisors (see below), whose sum is σ = 298628. Its totient is φ = 133164.

The previous prime is 199819. The next prime is 199831. The reversal of 199827 is 728991.

It is a happy number.

It is not a de Polignac number, because 199827 - 2³ = 199819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199791 and 199800.

It is not an unprimeable number, because it can be changed into a prime (199807) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1153 + ... + 1314.

2¹⁹⁹⁸²⁷ is an apocalyptic number.

199827 is a deficient number, since it is larger than the sum of its proper divisors (98801).

199827 is an equidigital number, since it uses as much as digits as its factorization.

199827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479 (or 2470 counting only the distinct ones).

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

The square root of 199827 is about 447.0201337748. The cubic root of 199827 is about 58.4634880645.

It can be divided in two parts, 1998 and 27, that added together give a square (2025 = 45²).

The spelling of 199827 in words is "one hundred ninety-nine thousand, eight hundred twenty-seven".