199393349 has 2 divisors, whose sum is σ = 199393350. Its totient is φ = 199393348.

The previous prime is 199393319. The next prime is 199393351. The reversal of 199393349 is 943393991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157377025 + 42016324 = 12545^2 + 6482^2 .

It is an emirp because it is prime and its reverse (943393991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199393349 is a prime.

It is a Sophie Germain prime.

Together with 199393351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199393297 and 199393306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199393319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99696674 + 99696675.

It is an arithmetic number, because the mean of its divisors is an integer number (99696675).

Almost surely, 2^199393349 is an apocalyptic number.

It is an amenable number.

199393349 is a deficient number, since it is larger than the sum of its proper divisors (1).

199393349 is an equidigital number, since it uses as much as digits as its factorization.

199393349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 708588, while the sum is 50.

The square root of 199393349 is about 14120.6709826410. The cubic root of 199393349 is about 584.2116626976.

The spelling of 199393349 in words is "one hundred ninety-nine million, three hundred ninety-three thousand, three hundred forty-nine".