199983317 has 2 divisors, whose sum is σ = 199983318. Its totient is φ = 199983316.

The previous prime is 199983307. The next prime is 199983349. The reversal of 199983317 is 713389991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123787876 + 76195441 = 11126^2 + 8729^2 .

It is an emirp because it is prime and its reverse (713389991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199983317 - 2⁸ = 199983061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199983307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99991658 + 99991659.

It is an arithmetic number, because the mean of its divisors is an integer number (99991659).

Almost surely, 2^199983317 is an apocalyptic number.

It is an amenable number.

199983317 is a deficient number, since it is larger than the sum of its proper divisors (1).

199983317 is an equidigital number, since it uses as much as digits as its factorization.

199983317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 199983317 is about 14141.5457783087. The cubic root of 199983317 is about 584.7872867278.

It can be divided in two parts, 19998 and 3317, that multiplied together give a palindrome (66333366).

The spelling of 199983317 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, three hundred seventeen".