499998816 has 72 divisors (see below), whose sum is σ = 1425846240. Its totient is φ = 166200576.

The previous prime is 499998803. The next prime is 499998833. The reversal of 499998816 is 618899994.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 109801 + ... + 114263.

It is an arithmetic number, because the mean of its divisors is an integer number (19803420).

Almost surely, 2^499998816 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 499998816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712923120).

499998816 is an abundant number, since it is smaller than the sum of its proper divisors (925847424).

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

499998816 is a wasteful number, since it uses less digits than its factorization.

499998816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4857 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 499998816 is about 22360.6532999374. The cubic root of 499998816 is about 793.6998994893.

The spelling of 499998816 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred sixteen".