491487343 has 4 divisors (see below), whose sum is σ = 491585328. Its totient is φ = 491389360.

The previous prime is 491487341. The next prime is 491487379. The reversal of 491487343 is 343784194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491487343 - 2¹ = 491487341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491487343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491487341) 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, 41038 + ... + 51643.

It is an arithmetic number, because the mean of its divisors is an integer number (122896332).

Almost surely, 2^491487343 is an apocalyptic number.

491487343 is a deficient number, since it is larger than the sum of its proper divisors (97985).

491487343 is an equidigital number, since it uses as much as digits as its factorization.

491487343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97984.

The product of its digits is 290304, while the sum is 43.

The square root of 491487343 is about 22169.5138196578. The cubic root of 491487343 is about 789.1703852980.

The spelling of 491487343 in words is "four hundred ninety-one million, four hundred eighty-seven thousand, three hundred forty-three".