499985000 has 120 divisors (see below), whose sum is σ = 1240829370. Its totient is φ = 188784000.

The previous prime is 499984997. The next prime is 499985023. The reversal of 499985000 is 589994.

It can be written as a sum of positive squares in 5 ways, for example, as 2427364 + 497557636 = 1558^2 + 22306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1804862 + ... + 1805138.

Almost surely, 2^499985000 is an apocalyptic number.

499985000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499985000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620414685).

499985000 is an abundant number, since it is smaller than the sum of its proper divisors (740844370).

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

499985000 is a wasteful number, since it uses less digits than its factorization.

499985000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 499985000 is about 22360.3443622857. The cubic root of 499985000 is about 793.6925888995.

The spelling of 499985000 in words is "four hundred ninety-nine million, nine hundred eighty-five thousand".