504664289 has 4 divisors (see below), whose sum is σ = 504709524. Its totient is φ = 504619056.

The previous prime is 504664267. The next prime is 504664291. The reversal of 504664289 is 982466405.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 415833664 + 88830625 = 20392^2 + 9425^2 .

It is a cyclic number.

It is not a de Polignac number, because 504664289 - 2¹² = 504660193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504664219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7379 + ... + 32615.

It is an arithmetic number, because the mean of its divisors is an integer number (126177381).

Almost surely, 2^504664289 is an apocalyptic number.

It is an amenable number.

504664289 is a deficient number, since it is larger than the sum of its proper divisors (45235).

504664289 is a wasteful number, since it uses less digits than its factorization.

504664289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45234.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 504664289 is about 22464.7343407395. The cubic root of 504664289 is about 796.1609235222.

The spelling of 504664289 in words is "five hundred four million, six hundred sixty-four thousand, two hundred eighty-nine".