491499008 has 240 divisors, whose sum is σ = 1351882224. Its totient is φ = 175472640.

The previous prime is 491498993. The next prime is 491499013. The reversal of 491499008 is 800994194.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a self number, because there is not a number n which added to its sum of digits gives 491499008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3587516 + ... + 3587652.

Almost surely, 2^491499008 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 491499008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675941112).

491499008 is an abundant number, since it is smaller than the sum of its proper divisors (860383216).

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

491499008 is a wasteful number, since it uses less digits than its factorization.

491499008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 170 counting only the distinct ones).

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

The square root of 491499008 is about 22169.7769046060. The cubic root of 491499008 is about 789.1766286597.

The spelling of 491499008 in words is "four hundred ninety-one million, four hundred ninety-nine thousand, eight".