499998520 has 32 divisors (see below), whose sum is σ = 1285711200. Its totient is φ = 171427968.

The previous prime is 499998511. The next prime is 499998553. The reversal of 499998520 is 25899994.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892575 + ... + 893134.

It is an arithmetic number, because the mean of its divisors is an integer number (40178475).

Almost surely, 2^499998520 is an apocalyptic number.

499998520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

499998520 is an abundant number, since it is smaller than the sum of its proper divisors (785712680).

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

499998520 is a wasteful number, since it uses less digits than its factorization.

499998520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785727 (or 1785723 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 499998520 is about 22360.6466811673. The cubic root of 499998520 is about 793.6997428655.

It can be divided in two parts, 4999985 and 20, that added together give a palindrome (5000005).

The spelling of 499998520 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred twenty".