457220947 has 4 divisors (see below), whose sum is σ = 457448320. Its totient is φ = 456993576.

The previous prime is 457220927. The next prime is 457220969. The reversal of 457220947 is 749022754.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-457220947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457220927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110643 + ... + 114700.

It is an arithmetic number, because the mean of its divisors is an integer number (114362080).

Almost surely, 2^457220947 is an apocalyptic number.

457220947 is a deficient number, since it is larger than the sum of its proper divisors (227373).

457220947 is a wasteful number, since it uses less digits than its factorization.

457220947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227372.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 457220947 is about 21382.7254343313. The cubic root of 457220947 is about 770.3865754397.

The spelling of 457220947 in words is "four hundred fifty-seven million, two hundred twenty thousand, nine hundred forty-seven".