491594 has 8 divisors (see below), whose sum is σ = 740928. Its totient is φ = 244620.

The previous prime is 491593. The next prime is 491611. The reversal of 491594 is 495194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 491594.

It is not an unprimeable number, because it can be changed into a prime (491591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (92616).

2⁴⁹¹⁵⁹⁴ is an apocalyptic number.

491594 is a deficient number, since it is larger than the sum of its proper divisors (249334).

491594 is a wasteful number, since it uses less digits than its factorization.

491594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180.

The product of its digits is 6480, while the sum is 32.

The square root of 491594 is about 701.1376469710. The cubic root of 491594 is about 78.9227466767.

Subtracting 491594 from its reverse (495194), we obtain a square (3600 = 60²).

The spelling of 491594 in words is "four hundred ninety-one thousand, five hundred ninety-four".