What is the # when u.s. viewers (million) is 17.44?
CREATE TABLE table_25539 (
    "No." real,
    "#" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (million)" text,
    "Rank (week)" text,
    "Original air date" text
)
SELECT COUNT("#") FROM table_25539 WHERE "U.S. viewers (million)" = '17.44'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the # when u.s. viewers (million) is 17.44? ### Input: CREATE TABLE table_25539 (
    "No." real,
    "#" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (million)" text,
    "Rank (week)" text,
    "Original air date" text
) ### Response: SELECT COUNT("#") FROM table_25539 WHERE "U.S. viewers (million)" = '17.44'