499905585 has 12 divisors (see below), whose sum is σ = 866503092. Its totient is φ = 266616288.

The previous prime is 499905569. The next prime is 499905607. The reversal of 499905585 is 585509994.

It can be written as a sum of positive squares in 2 ways, for example, as 197458704 + 302446881 = 14052^2 + 17391^2 .

It is not a de Polignac number, because 499905585 - 2⁴ = 499905569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5554462 + ... + 5554551.

It is an arithmetic number, because the mean of its divisors is an integer number (72208591).

Almost surely, 2^499905585 is an apocalyptic number.

499905585 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

499905585 is a deficient number, since it is larger than the sum of its proper divisors (366597507).

499905585 is a wasteful number, since it uses less digits than its factorization.

499905585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109024 (or 11109021 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The square root of 499905585 is about 22358.5684917438. The cubic root of 499905585 is about 793.6505646825.

The spelling of 499905585 in words is "four hundred ninety-nine million, nine hundred five thousand, five hundred eighty-five".