504999863 has 4 divisors (see below), whose sum is σ = 507224760. Its totient is φ = 502774968.

The previous prime is 504999853. The next prime is 504999871. The reversal of 504999863 is 368999405.

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

It is a cyclic number.

It is not a de Polignac number, because 504999863 - 2¹⁸ = 504737719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504999853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112108 + ... + 1112561.

It is an arithmetic number, because the mean of its divisors is an integer number (126806190).

Almost surely, 2^504999863 is an apocalyptic number.

504999863 is a deficient number, since it is larger than the sum of its proper divisors (2224897).

504999863 is a wasteful number, since it uses less digits than its factorization.

504999863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224896.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 504999863 is about 22472.2020060340. The cubic root of 504999863 is about 796.3373521669.

The spelling of 504999863 in words is "five hundred four million, nine hundred ninety-nine thousand, eight hundred sixty-three".