491333 has 2 divisors, whose sum is σ = 491334. Its totient is φ = 491332.

The previous prime is 491329. The next prime is 491339. The reversal of 491333 is 333194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332929 + 158404 = 577^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 491333 - 2² = 491329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491299 and 491308.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491333.

It is not a weakly prime, because it can be changed into another prime (491339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245666 + 245667.

It is an arithmetic number, because the mean of its divisors is an integer number (245667).

2⁴⁹¹³³³ is an apocalyptic number.

It is an amenable number.

491333 is a deficient number, since it is larger than the sum of its proper divisors (1).

491333 is an equidigital number, since it uses as much as digits as its factorization.

491333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 23.

The square root of 491333 is about 700.9514961822. The cubic root of 491333 is about 78.9087768266.

The spelling of 491333 in words is "four hundred ninety-one thousand, three hundred thirty-three".