459973809 has 15 divisors (see below), whose sum is σ = 687409833. Its totient is φ = 306520524.

The previous prime is 459973781. The next prime is 459973823. The reversal of 459973809 is 908379954.

The square root of 459973809 is 21447.

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

It is not a de Polignac number, because 459973809 - 2⁷ = 459973681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (459973859) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 191832 + ... + 194214.

Almost surely, 2^459973809 is an apocalyptic number.

459973809 is the 21447-th square number.

459973809 is the 10724-th centered octagonal number.

It is an amenable number.

459973809 is a deficient number, since it is larger than the sum of its proper divisors (227436024).

459973809 is an frugal number, since it uses more digits than its factorization.

459973809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The cubic root of 459973809 is about 771.9296119391.

The spelling of 459973809 in words is "four hundred fifty-nine million, nine hundred seventy-three thousand, eight hundred nine".