503998 has 16 divisors (see below), whose sum is σ = 852480. Its totient is φ = 221400.

The previous prime is 503989. The next prime is 504001. The reversal of 503998 is 899305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (53280).

2⁵⁰³⁹⁹⁸ is an apocalyptic number.

503998 is a deficient number, since it is larger than the sum of its proper divisors (348482).

503998 is a wasteful number, since it uses less digits than its factorization.

503998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 503998 is about 709.9281653801. The cubic root of 503998 is about 79.5810388917.

The spelling of 503998 in words is "five hundred three thousand, nine hundred ninety-eight".