491884004 has 12 divisors (see below), whose sum is σ = 862119804. Its totient is φ = 245564064.

The previous prime is 491883949. The next prime is 491884033. The reversal of 491884004 is 400488194.

It can be written as a sum of positive squares in 2 ways, for example, as 81902500 + 409981504 = 9050^2 + 20248^2 .

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, 91547 + ... + 96770.

It is an arithmetic number, because the mean of its divisors is an integer number (71843317).

Almost surely, 2^491884004 is an apocalyptic number.

It is an amenable number.

491884004 is a deficient number, since it is larger than the sum of its proper divisors (370235800).

491884004 is a wasteful number, since it uses less digits than its factorization.

491884004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188974 (or 188972 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 491884004 is about 22178.4581069109. The cubic root of 491884004 is about 789.3826314823.

The spelling of 491884004 in words is "four hundred ninety-one million, eight hundred eighty-four thousand, four".