199983349 has 2 divisors, whose sum is σ = 199983350. Its totient is φ = 199983348.

The previous prime is 199983317. The next prime is 199983361. The reversal of 199983349 is 943389991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145371249 + 54612100 = 12057^2 + 7390^2 .

It is an emirp because it is prime and its reverse (943389991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199983349 - 2⁵ = 199983317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199983349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199983389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99991674 + 99991675.

It is an arithmetic number, because the mean of its divisors is an integer number (99991675).

Almost surely, 2^199983349 is an apocalyptic number.

It is an amenable number.

199983349 is a deficient number, since it is larger than the sum of its proper divisors (1).

199983349 is an equidigital number, since it uses as much as digits as its factorization.

199983349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 55.

The square root of 199983349 is about 14141.5469097267. The cubic root of 199983349 is about 584.7873179190.

The spelling of 199983349 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, three hundred forty-nine".