Are Akita Inus intelligent?

I'm curious to know, do Akita Inus possess a high level of intelligence? I've heard they're quite loyal and protective, but does that translate to cognitive abilities as well? Are they easily trainable, or do they require more patience and dedication from their owners? Are there any specific tests or behaviors that can demonstrate their intelligence? I'm eager to learn more about these majestic dogs and how they stack up in terms of mental prowess.