Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_203_249 ( id number, "position" number, "song title" text, "artist" text, "sales" number, "highest position" number )

### Question ###
how many songs had at least 500,000 sales ?

### Accurate SQL ###

SELECT COUNT("song title") FROM table_203_249 WHERE "sales" >= 500000