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_60 (enrollment INTEGER, founded VARCHAR, institution VARCHAR)

### Question ###
what is the least enrollment when founded after 1809 and the institution is university of michigan?

### Accurate SQL ###

SELECT MIN(enrollment) FROM table_name_60 WHERE founded > 1809 AND institution = "university of michigan"