CREATE TABLE table_26914076_4 (_number NUMBER, us_viewers__millions_ VARCHAR2)

What number episode in the season was watched by 0.49 million U.S. viewers?
SELECT MAX(_number) FROM table_26914076_4 WHERE us_viewers__millions_ = "0.49"
SELECT MAX("_number") FROM "table_26914076_4" WHERE "0.49" = "us_viewers__millions_"