491459585 has 16 divisors (see below), whose sum is σ = 610371072. Its totient is φ = 379488000.

The previous prime is 491459581. The next prime is 491459593. The reversal of 491459585 is 585954194.

It is not a de Polignac number, because 491459585 - 2² = 491459581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491459581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58202 + ... + 66108.

It is an arithmetic number, because the mean of its divisors is an integer number (38148192).

Almost surely, 2^491459585 is an apocalyptic number.

It is an amenable number.

491459585 is a deficient number, since it is larger than the sum of its proper divisors (118911487).

491459585 is a wasteful number, since it uses less digits than its factorization.

491459585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8344.

The product of its digits is 1296000, while the sum is 50.

The square root of 491459585 is about 22168.8877709280. The cubic root of 491459585 is about 789.1555282155.

The spelling of 491459585 in words is "four hundred ninety-one million, four hundred fifty-nine thousand, five hundred eighty-five".