499984 has 10 divisors (see below), whose sum is σ = 968750. Its totient is φ = 249984.

The previous prime is 499979. The next prime is 500009. The reversal of 499984 is 489994.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 48400 = 672^2 + 220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 499984.

It is a congruent number.

It is an unprimeable number.

499984 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15609 + ... + 15640.

It is an arithmetic number, because the mean of its divisors is an integer number (96875).

2⁴⁹⁹⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

499984 is a deficient number, since it is larger than the sum of its proper divisors (468766).

499984 is a wasteful number, since it uses less digits than its factorization.

499984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31257 (or 31251 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 499984 is about 707.0954673875. The cubic root of 499984 is about 79.3692059755.

The spelling of 499984 in words is "four hundred ninety-nine thousand, nine hundred eighty-four".