199983361 has 2 divisors, whose sum is σ = 199983362. Its totient is φ = 199983360.

The previous prime is 199983349. The next prime is 199983373. The reversal of 199983361 is 163389991.

It is a balanced prime because it is at equal distance from previous prime (199983349) and next prime (199983373).

It can be written as a sum of positive squares in only one way, i.e., 135582736 + 64400625 = 11644^2 + 8025^2 .

It is an emirp because it is prime and its reverse (163389991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199983361 - 2¹³ = 199975169 is a prime.

It is not a weakly prime, because it can be changed into another prime (199983061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99991680 + 99991681.

It is an arithmetic number, because the mean of its divisors is an integer number (99991681).

Almost surely, 2^199983361 is an apocalyptic number.

It is an amenable number.

199983361 is a deficient number, since it is larger than the sum of its proper divisors (1).

199983361 is an equidigital number, since it uses as much as digits as its factorization.

199983361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 199983361 is about 14141.5473340084. The cubic root of 199983361 is about 584.7873296158.

The spelling of 199983361 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, three hundred sixty-one".