939903 has 4 divisors (see below), whose sum is σ = 1253208. Its totient is φ = 626600.

The previous prime is 939901. The next prime is 939923. The reversal of 939903 is 309939.

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

It is a cyclic number.

It is not a de Polignac number, because 939903 - 2¹ = 939901 is a prime.

It is a D-number.

939903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156648 + ... + 156653.

It is an arithmetic number, because the mean of its divisors is an integer number (313302).

2⁹³⁹⁹⁰³ is an apocalyptic number.

939903 is a deficient number, since it is larger than the sum of its proper divisors (313305).

939903 is a wasteful number, since it uses less digits than its factorization.

939903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313304.

The product of its (nonzero) digits is 6561, while the sum is 33.

The square root of 939903 is about 969.4859462622. The cubic root of 939903 is about 97.9552412573.

The spelling of 939903 in words is "nine hundred thirty-nine thousand, nine hundred three".