199289 has 2 divisors, whose sum is σ = 199290. Its totient is φ = 199288.

The previous prime is 199267. The next prime is 199313. The reversal of 199289 is 982991.

199289 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., 156025 + 43264 = 395^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 199289 - 2⁸ = 199033 is a prime.

It is a super-2 number, since 2×199289² = 79432211042, which contains 22 as substring.

It is a nialpdrome in base 9.

It is not a weakly prime, because it can be changed into another prime (199489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99644 + 99645.

It is an arithmetic number, because the mean of its divisors is an integer number (99645).

2¹⁹⁹²⁸⁹ is an apocalyptic number.

It is an amenable number.

199289 is a deficient number, since it is larger than the sum of its proper divisors (1).

199289 is an equidigital number, since it uses as much as digits as its factorization.

199289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 38.

The square root of 199289 is about 446.4179655883. The cubic root of 199289 is about 58.4109732617.

The spelling of 199289 in words is "one hundred ninety-nine thousand, two hundred eighty-nine".