Thread Safety for a getter and setter in a singleton

I have created an simple singleton in Swift 3:

class MySingleton {
    private var myName: String
    private init() {}
    static let shared = MySingleton()

    func setName(_ name: String) {
        myName = name
    }

    func getName() -> String {
        return myName
    }
}

Since I made the init() private , and also declared shared instance to be static let, I think the initializer is thread safe. But what about the getter and setter functions for myName, are they thread safe?