CREATE TABLE table_203_413 (id DECIMAL, "rank" TEXT, "city" TEXT, "population" DECIMAL, "area\ ( km2 ) " DECIMAL, "density\ ( inhabitants/km2 ) " DECIMAL, "altitude\ ( mslm ) " DECIMAL)

how many cities have densities at least above 400 ?
SELECT COUNT("rank") FROM table_203_413 WHERE "density\n(inhabitants/km2)" > 400
SELECT COUNT("rank") FROM "table_203_413" WHERE "density\n(inhabitants/km2)" > 400