491411 has 4 divisors (see below), whose sum is σ = 499800. Its totient is φ = 483024.

The previous prime is 491377. The next prime is 491417. The reversal of 491411 is 114194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114194 = 2 ⋅57097.

It is a cyclic number.

It is not a de Polignac number, because 491411 - 2¹⁸ = 229267 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491411.

It is not an unprimeable number, because it can be changed into a prime (491417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (124950).

2⁴⁹¹⁴¹¹ is an apocalyptic number.

491411 is the 314-th centered decagonal number.

491411 is a deficient number, since it is larger than the sum of its proper divisors (8389).

491411 is an equidigital number, since it uses as much as digits as its factorization.

491411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8388.

The product of its digits is 144, while the sum is 20.

The square root of 491411 is about 701.0071326313. The cubic root of 491411 is about 78.9129522425.

The spelling of 491411 in words is "four hundred ninety-one thousand, four hundred eleven".