CREATE TABLE table_44604 ("Number" TEXT, "Builder" TEXT, "Type" TEXT, "Date" TEXT, "Works number" FLOAT)

Baldwin Locomotive Works, also with works number 40864, is listed as what number?
SELECT "Number" FROM table_44604 WHERE "Builder" = 'baldwin locomotive works' AND "Works number" = '40864'
SELECT "Number" FROM "table_44604" WHERE "Builder" = 'baldwin locomotive works' AND "Works number" = '40864'