503994 has 16 divisors (see below), whose sum is σ = 1061280. Its totient is φ = 159120.

The previous prime is 503989. The next prime is 504001. The reversal of 503994 is 499305.

503994 is nontrivially palindromic in base 15.

It is an unprimeable number.

503994 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2097 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (66330).

2⁵⁰³⁹⁹⁴ is an apocalyptic number.

503994 is an abundant number, since it is smaller than the sum of its proper divisors (557286).

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

503994 is a wasteful number, since it uses less digits than its factorization.

503994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 503994 is about 709.9253481881. The cubic root of 503994 is about 79.5808283585.

It can be divided in two parts, 50399 and 4, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 503994 in words is "five hundred three thousand, nine hundred ninety-four".