491144 has 24 divisors (see below), whose sum is σ = 966810. Its totient is φ = 233856.

The previous prime is 491137. The next prime is 491149. The reversal of 491144 is 441194.

It can be written as a sum of positive squares in 3 ways, for example, as 438244 + 52900 = 662^2 + 230^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (491149) 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 5 ways as a sum of consecutive naturals, for example, 6692 + ... + 6764.

2⁴⁹¹¹⁴⁴ is an apocalyptic number.

It is an amenable number.

491144 is a deficient number, since it is larger than the sum of its proper divisors (475666).

491144 is a wasteful number, since it uses less digits than its factorization.

491144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 104 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 491144 is about 700.8166664685. The cubic root of 491144 is about 78.8986576396.

The spelling of 491144 in words is "four hundred ninety-one thousand, one hundred forty-four".