457489321 has 9 divisors (see below), whose sum is σ = 465430629. Its totient is φ = 449682336.

The previous prime is 457489309. The next prime is 457489327. The reversal of 457489321 is 123984754.

The square root of 457489321 is 21389.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 154032921 + 303456400 = 12411^2 + 17420^2 .

It is a de Polignac number, because none of the positive numbers 2^k-457489321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457489327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1561251 + ... + 1561543.

Almost surely, 2^457489321 is an apocalyptic number.

457489321 is the 21389-th square number.

457489321 is the 10695-th centered octagonal number.

It is an amenable number.

457489321 is a deficient number, since it is larger than the sum of its proper divisors (7941308).

457489321 is an frugal number, since it uses more digits than its factorization.

457489321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 366 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The cubic root of 457489321 is about 770.5372766773.

The spelling of 457489321 in words is "four hundred fifty-seven million, four hundred eighty-nine thousand, three hundred twenty-one".