491044743 has 24 divisors (see below), whose sum is σ = 836765696. Its totient is φ = 271544400.

The previous prime is 491044739. The next prime is 491044751. The reversal of 491044743 is 347440194.

It is not a de Polignac number, because 491044743 - 2² = 491044739 is a prime.

It is a super-2 number, since 2×491044743² = 482249879255872098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491044698 and 491044707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491044343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123763 + ... + 127668.

Almost surely, 2^491044743 is an apocalyptic number.

491044743 is a deficient number, since it is larger than the sum of its proper divisors (345720953).

491044743 is a wasteful number, since it uses less digits than its factorization.

491044743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251475 (or 251472 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 491044743 is about 22159.5293948224. The cubic root of 491044743 is about 788.9334231341.

The spelling of 491044743 in words is "four hundred ninety-one million, forty-four thousand, seven hundred forty-three".