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_15909409_2 ( country VARCHAR, total_freshwater_withdrawal__km_3__yr_ VARCHAR )

### Question ###
In how many countries was the total freshwater withdrawal (km 3 /yr) 169.39?

### Accurate SQL ###

SELECT COUNT(country) FROM table_15909409_2 WHERE total_freshwater_withdrawal__km_3__yr_ = "169.39"