199998713 has 2 divisors, whose sum is σ = 199998714.
Its totient is φ = 199998712.
The previous prime is 199998707. The next prime is 199998749. The reversal of 199998713 is 317899991.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 133934329 + 66064384 = 11573^2 + 8128^2
It is an emirp because it is prime and its reverse (317899991) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 199998713 - 26 = 199998649 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (199998913) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99999356 + 99999357.
It is an arithmetic number, because the mean of its divisors is an integer number (99999357).
Almost surely, 2199998713 is an apocalyptic number.
It is an amenable number.
199998713 is a deficient number, since it is larger than the sum of its proper divisors (1).
199998713 is an equidigital number, since it uses as much as digits as its factorization.
199998713 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1102248, while the sum is 56.
The square root of 199998713 is about 14142.0901213364.
The cubic root of 199998713 is about 584.8022932363.
The spelling of 199998713 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, seven hundred thirteen".