199247 has 2 divisors, whose sum is σ = 199248. Its totient is φ = 199246.

The previous prime is 199211. The next prime is 199261. The reversal of 199247 is 742991.

199247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (742991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199247 - 2¹⁰ = 198223 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 (199207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99623 + 99624.

It is an arithmetic number, because the mean of its divisors is an integer number (99624).

2¹⁹⁹²⁴⁷ is an apocalyptic number.

199247 is a deficient number, since it is larger than the sum of its proper divisors (1).

199247 is an equidigital number, since it uses as much as digits as its factorization.

199247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 199247 is about 446.3709219920. The cubic root of 199247 is about 58.4068696179.

The spelling of 199247 in words is "one hundred ninety-nine thousand, two hundred forty-seven".