491285976 has 16 divisors (see below), whose sum is σ = 1228215000. Its totient is φ = 163761984.

The previous prime is 491285969. The next prime is 491285981. The reversal of 491285976 is 679582194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10235101 + ... + 10235148.

Almost surely, 2^491285976 is an apocalyptic number.

It is an amenable number.

491285976 is an abundant number, since it is smaller than the sum of its proper divisors (736929024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491285976 is a wasteful number, since it uses less digits than its factorization.

491285976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470258 (or 20470254 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 491285976 is about 22164.9718249313. The cubic root of 491285976 is about 789.0625937256.

The spelling of 491285976 in words is "four hundred ninety-one million, two hundred eighty-five thousand, nine hundred seventy-six".