491208992 has 24 divisors (see below), whose sum is σ = 967668156. Its totient is φ = 245452032.

The previous prime is 491208967. The next prime is 491209001. The reversal of 491208992 is 299802194.

It can be written as a sum of positive squares in 2 ways, for example, as 449270416 + 41938576 = 21196^2 + 6476^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61958 + ... + 69434.

Almost surely, 2^491208992 is an apocalyptic number.

It is an amenable number.

491208992 is a deficient number, since it is larger than the sum of its proper divisors (476459164).

491208992 is a wasteful number, since it uses less digits than its factorization.

491208992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540 (or 9532 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 491208992 is about 22163.2351429118. The cubic root of 491208992 is about 789.0213764775.

The spelling of 491208992 in words is "four hundred ninety-one million, two hundred eight thousand, nine hundred ninety-two".