493903 has 4 divisors (see below), whose sum is σ = 497920. Its totient is φ = 489888.

The previous prime is 493897. The next prime is 493919. The reversal of 493903 is 309394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493973) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1818 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (124480).

2⁴⁹³⁹⁰³ is an apocalyptic number.

493903 is a deficient number, since it is larger than the sum of its proper divisors (4017).

493903 is a wasteful number, since it uses less digits than its factorization.

493903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 493903 is about 702.7823276093. The cubic root of 493903 is about 79.0461195215.

The spelling of 493903 in words is "four hundred ninety-three thousand, nine hundred three".