209198 has 16 divisors (see below), whose sum is σ = 352944. Its totient is φ = 92160.

The previous prime is 209189. The next prime is 209201. The reversal of 209198 is 891902.

209198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 209198.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 209198.

It is an unprimeable number.

209198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686 + ... + 942.

It is an arithmetic number, because the mean of its divisors is an integer number (22059).

2²⁰⁹¹⁹⁸ is an apocalyptic number.

209198 is a deficient number, since it is larger than the sum of its proper divisors (143746).

209198 is a wasteful number, since it uses less digits than its factorization.

209198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 209198 is about 457.3816786886. The cubic root of 209198 is about 59.3634559274.

The spelling of 209198 in words is "two hundred nine thousand, one hundred ninety-eight".