Ya know, they're actually Turboshafts...
What's a turboshaft, you ask?
Basically, it's a jet engine that has a turbine at the end, behind the air compressor baldes; the hot air from the jet turns the turbine, which in turn turns a shaft connected to a propellor... (In the Bear's case, a pair of contra-rotating props for each engine)
Random fact: each Nk-12 Turboshaft on Tu-95s, Tu-114s, Tu-126s, and An-22s is rated at FIFTEEN THOUSAND HORSE POWER!!!