197289 has 8 divisors (see below), whose sum is σ = 292320. Its totient is φ = 131508.

The previous prime is 197279. The next prime is 197293. The reversal of 197289 is 982791.

It is a happy number.

It is not a de Polignac number, because 197289 - 2⁴ = 197273 is a prime.

It is a Curzon number.

197289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (197269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627 + ... + 3680.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2¹⁹⁷²⁸⁹ is an apocalyptic number.

It is an amenable number.

197289 is a deficient number, since it is larger than the sum of its proper divisors (95031).

197289 is an equidigital number, since it uses as much as digits as its factorization.

197289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316 (or 7310 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 197289 is about 444.1722638797. The cubic root of 197289 is about 58.2149180591.

The spelling of 197289 in words is "one hundred ninety-seven thousand, two hundred eighty-nine".