499986 has 32 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 162288.

The previous prime is 499979. The next prime is 500009. The reversal of 499986 is 689994.

499986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499986.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2440 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2⁴⁹⁹⁹⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570240).

499986 is an abundant number, since it is smaller than the sum of its proper divisors (640494).

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

499986 is a wasteful number, since it uses less digits than its factorization.

499986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 499986 is about 707.0968816223. The cubic root of 499986 is about 79.3693118043.

It can be divided in two parts, 499 and 986, that added together give a triangular number (1485 = T₅₄).

The spelling of 499986 in words is "four hundred ninety-nine thousand, nine hundred eighty-six".