499999808 has 112 divisors (see below), whose sum is σ = 1245095808. Its totient is φ = 193536000.

The previous prime is 499999751. The next prime is 499999831. The reversal of 499999808 is 808999994.

It is a tau number, because it is divible by the number of its divisors (112).

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 15 ways as a sum of consecutive naturals, for example, 1187438 + ... + 1187858.

Almost surely, 2^499999808 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 499999808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622547904).

499999808 is an abundant number, since it is smaller than the sum of its proper divisors (745096000).

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

499999808 is a wasteful number, since it uses less digits than its factorization.

499999808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 65.

The square root of 499999808 is about 22360.6754817470. The cubic root of 499999808 is about 793.7004243904.

The spelling of 499999808 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred eight".