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_name_49 (numbers VARCHAR, power__horsepower_ VARCHAR, type VARCHAR)

### Question ###
What is the numbers of the thn unit with a power greater than 220?

### Accurate SQL ###

SELECT numbers FROM table_name_49 WHERE power__horsepower_ > 220 AND type = "thn"