199841139 has 6 divisors (see below), whose sum is σ = 288659436. Its totient is φ = 133227420.

The previous prime is 199841129. The next prime is 199841143. The reversal of 199841139 is 931148991.

It is a de Polignac number, because none of the positive numbers 2^k-199841139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199841094 and 199841103.

It is not an unprimeable number, because it can be changed into a prime (199841129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11102277 + ... + 11102294.

It is an arithmetic number, because the mean of its divisors is an integer number (48109906).

Almost surely, 2^199841139 is an apocalyptic number.

199841139 is a deficient number, since it is larger than the sum of its proper divisors (88818297).

199841139 is a wasteful number, since it uses less digits than its factorization.

199841139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22204577 (or 22204574 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 199841139 is about 14136.5179234492. The cubic root of 199841139 is about 584.6486691678.

The spelling of 199841139 in words is "one hundred ninety-nine million, eight hundred forty-one thousand, one hundred thirty-nine".