199039 has 2 divisors, whose sum is σ = 199040. Its totient is φ = 199038.

The previous prime is 199037. The next prime is 199049. The reversal of 199039 is 930991.

It is a weak prime.

It is an emirp because it is prime and its reverse (930991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199039 - 2¹ = 199037 is a prime.

Together with 199037, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99519 + 99520.

It is an arithmetic number, because the mean of its divisors is an integer number (99520).

2¹⁹⁹⁰³⁹ is an apocalyptic number.

199039 is a deficient number, since it is larger than the sum of its proper divisors (1).

199039 is an equidigital number, since it uses as much as digits as its factorization.

199039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 199039 is about 446.1378710668. The cubic root of 199039 is about 58.3865383058.

The spelling of 199039 in words is "one hundred ninety-nine thousand, thirty-nine".