199139 has 8 divisors (see below), whose sum is σ = 215040. Its totient is φ = 183816.

The previous prime is 199109. The next prime is 199151. The reversal of 199139 is 931991.

199139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199139 - 2¹² = 195043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 199139.

It is not an unprimeable number, because it can be changed into a prime (199109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782 + ... + 1004.

It is an arithmetic number, because the mean of its divisors is an integer number (26880).

2¹⁹⁹¹³⁹ is an apocalyptic number.

199139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

199139 is a deficient number, since it is larger than the sum of its proper divisors (15901).

199139 is a wasteful number, since it uses less digits than its factorization.

199139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289.

The product of its digits is 2187, while the sum is 32.

The square root of 199139 is about 446.2499299720. The cubic root of 199139 is about 58.3963147421.

The spelling of 199139 in words is "one hundred ninety-nine thousand, one hundred thirty-nine".