491344912 has 40 divisors (see below), whose sum is σ = 990662040. Its totient is φ = 235791360.

The previous prime is 491344907. The next prime is 491344937. The reversal of 491344912 is 219443194.

It can be written as a sum of positive squares in 4 ways, for example, as 83466496 + 407878416 = 9136^2 + 20196^2 .

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 7 ways as a sum of consecutive naturals, for example, 77212 + ... + 83332.

It is an arithmetic number, because the mean of its divisors is an integer number (24766551).

Almost surely, 2^491344912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491344912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495331020).

491344912 is an abundant number, since it is smaller than the sum of its proper divisors (499317128).

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

491344912 is a wasteful number, since it uses less digits than its factorization.

491344912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331 (or 6325 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 491344912 is about 22166.3012701713. The cubic root of 491344912 is about 789.0941451612.

The spelling of 491344912 in words is "four hundred ninety-one million, three hundred forty-four thousand, nine hundred twelve".