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_27547668_3 (directed_by VARCHAR, viewers VARCHAR)

### Question ###
Who directed the episode with 899000 viewers?

### Accurate SQL ###

SELECT directed_by FROM table_27547668_3 WHERE viewers = 899000