504920609 has 2 divisors, whose sum is σ = 504920610. Its totient is φ = 504920608.

The previous prime is 504920597. The next prime is 504920627. The reversal of 504920609 is 906029405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489294400 + 15626209 = 22120^2 + 3953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504920609 is a prime.

It is not a weakly prime, because it can be changed into another prime (504920639) 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 as a sum of consecutive naturals, namely, 252460304 + 252460305.

It is an arithmetic number, because the mean of its divisors is an integer number (252460305).

Almost surely, 2^504920609 is an apocalyptic number.

It is an amenable number.

504920609 is a deficient number, since it is larger than the sum of its proper divisors (1).

504920609 is an equidigital number, since it uses as much as digits as its factorization.

504920609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 504920609 is about 22470.4385582480. The cubic root of 504920609 is about 796.2956912827.

The spelling of 504920609 in words is "five hundred four million, nine hundred twenty thousand, six hundred nine".