Cannot set property number of #<Owner> which has only a getter

class Pet {

  constructor(animal) {
  this.animal = animal;

  }


get activity() {

  const today = new Date();
  const hour = today.getHours();

  if(hour < 8) {

    return "sleep";

  }
  else {

    return "woke";

  }

}

get owner() {

  return this._owner;

}


set owner(owner) {

  this._ownerName = owner;
  console.log(owner + "setter");


}
}


class Owner {



  constructor(name, number, gender) {

    this.name = name;
    this.number = number;
    this.gender = gender;


  }

  set(number) {


  const numberformatted = number.replace("abc", "");
  this._number = numberformatted;



}

  get number() {

    return this._number;



  }






}

const animal1 = new Pet();
animal1.animal = "dog";


owner1 = new Owner("Ashley", "abc12345", "female");
console.log(animal1.owner1);