Cognomen 文根 (文根 
, Wengen 
) , in the entire world, is quite a rare family name. The surname 文根 is characteristic of Norway, where it is quite a rare surname, China, where it is a rare surname, and Switzerland. Measured by absolute frequency, it is the most numerous in China, Indonesia, and Norway. More prevalently, 文根 is the forename as well as the last name.