199983149 has 2 divisors, whose sum is σ = 199983150. Its totient is φ = 199983148.

The previous prime is 199983143. The next prime is 199983191. The reversal of 199983149 is 941389991.

199983149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181980100 + 18003049 = 13490^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 199983149 - 2¹² = 199979053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199983149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199983143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99991574 + 99991575.

It is an arithmetic number, because the mean of its divisors is an integer number (99991575).

Almost surely, 2^199983149 is an apocalyptic number.

It is an amenable number.

199983149 is a deficient number, since it is larger than the sum of its proper divisors (1).

199983149 is an equidigital number, since it uses as much as digits as its factorization.

199983149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 53.

The square root of 199983149 is about 14141.5398383627. The cubic root of 199983149 is about 584.7871229736.

The spelling of 199983149 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, one hundred forty-nine".