499999520 has 24 divisors (see below), whose sum is σ = 1181249244. Its totient is φ = 199999744.

The previous prime is 499999517. The next prime is 499999543. The reversal of 499999520 is 25999994.

It can be written as a sum of positive squares in 2 ways, for example, as 462594064 + 37405456 = 21508^2 + 6116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562339 + ... + 1562658.

Almost surely, 2^499999520 is an apocalyptic number.

499999520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

499999520 is an abundant number, since it is smaller than the sum of its proper divisors (681249724).

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

499999520 is a wasteful number, since it uses less digits than its factorization.

499999520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125012 (or 3125004 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 56.

The square root of 499999520 is about 22360.6690418690. The cubic root of 499999520 is about 793.7002719999.

The spelling of 499999520 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, five hundred twenty".