Show if a exponentiation sum of numbers is False or True with the same input

potencial.py

import unittest 

def potencial(numbers: str):

    to_split = int(len(numbers) / 2)

    to_sum = (int(numbers[0:to_split]) + int(numbers[to_split::])) ** 2

    if to_sum == int(numbers):
        return True

    return False

class PotencialTestCase(unittest.TestCase):

    def tests_false_potencial(self):
        self.assertEqual(potencial("123456"), False)
    def tests_true_potencial(self):
        self.assertEqual(potencial("998001"), True)

if __name__ == "__main__":
    unittest.main()