499988 has 12 divisors (see below), whose sum is σ = 880320. Its totient is φ = 248472.

The previous prime is 499979. The next prime is 500009. The reversal of 499988 is 889994.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499988.

It is an unprimeable number.

499988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (73360).

2⁴⁹⁹⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

499988 is a deficient number, since it is larger than the sum of its proper divisors (380332).

499988 is a wasteful number, since it uses less digits than its factorization.

499988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 499988 is about 707.0982958543. The cubic root of 499988 is about 79.3694176329.

The spelling of 499988 in words is "four hundred ninety-nine thousand, nine hundred eighty-eight".