499999986 has 32 divisors (see below), whose sum is σ = 1132081920. Its totient is φ = 163521072.

The previous prime is 499999931. The next prime is 499999993. The reversal of 499999986 is 689999994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84490 + ... + 90213.

It is an arithmetic number, because the mean of its divisors is an integer number (35377560).

Almost surely, 2^499999986 is an apocalyptic number.

499999986 is an abundant number, since it is smaller than the sum of its proper divisors (632081934).

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

499999986 is a wasteful number, since it uses less digits than its factorization.

499999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174767 (or 174761 counting only the distinct ones).

The product of its digits is 102036672, while the sum is 72.

The square root of 499999986 is about 22360.6794619484. The cubic root of 499999986 is about 793.7005185762.

The spelling of 499999986 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-six".