Armstrong Number Check

An **Armstrong number** (also known as a narcissistic number) is a number that is equal to the sum of its own digits raised to the power of the number of digits.

Write a function `is_armstrong_number(number: int) -> bool` that checks whether a given number is an Armstrong number.

#### Example Usage
```python [main.nopy]
print(is_armstrong_number(153))  # True, because 1^3 + 5^3 + 3^3 = 153
print(is_armstrong_number(9474)) # True, because 9^4 + 4^4 + 7^4 + 4^4 = 9474
print(is_armstrong_number(123))  # False, because 1^3 + 2^3 + 3^3 != 123
```

#### Constraints
- The input number will be a non-negative integer.
- The function should return `True` if the number is an Armstrong number, otherwise `False`.
def is_armstrong_number(number: int) -> bool:
    """
    Determine if the given number is an Armstrong number.

    Args:
        number (int): The number to check.

    Returns:
        bool: True if the number is an Armstrong number, False otherwise.
    """
    # Placeholder for the solution
    pass
Intermediate mathfunctionsconditionalsloops
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