491983303 has 8 divisors (see below), whose sum is σ = 566371872. Its totient is φ = 418621056.

The previous prime is 491983279. The next prime is 491983319. The reversal of 491983303 is 303389194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 491983303 - 2²⁵ = 458428871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491983333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255550 + ... + 257467.

It is an arithmetic number, because the mean of its divisors is an integer number (70796484).

Almost surely, 2^491983303 is an apocalyptic number.

491983303 is a deficient number, since it is larger than the sum of its proper divisors (74388569).

491983303 is a wasteful number, since it uses less digits than its factorization.

491983303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513161.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 491983303 is about 22180.6966301782. The cubic root of 491983303 is about 789.4357467366.

The spelling of 491983303 in words is "four hundred ninety-one million, nine hundred eighty-three thousand, three hundred three".