199832197 has 2 divisors, whose sum is σ = 199832198. Its totient is φ = 199832196.

The previous prime is 199832179. The next prime is 199832209. The reversal of 199832197 is 791238991.

199832197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (199832179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119443041 + 80389156 = 10929^2 + 8966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199832197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199832197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199832167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99916098 + 99916099.

It is an arithmetic number, because the mean of its divisors is an integer number (99916099).

Almost surely, 2^199832197 is an apocalyptic number.

It is an amenable number.

199832197 is a deficient number, since it is larger than the sum of its proper divisors (1).

199832197 is an equidigital number, since it uses as much as digits as its factorization.

199832197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 49.

The square root of 199832197 is about 14136.2016468357. The cubic root of 199832197 is about 584.6399488973.

The spelling of 199832197 in words is "one hundred ninety-nine million, eight hundred thirty-two thousand, one hundred ninety-seven".