Which Area (km²) is the lowest one that has a Population of 17,089?
CREATE TABLE "municipalities" (
  "name" text,
  "area_km" real,
  "pop" real,
  "pop_area_1_km" real,
  "no_p" real,
  "no_c_no_t" text,
  "subregion" text
);
SELECT MIN("area_km") FROM "municipalities" WHERE "pop"='17,089';