903139 has 4 divisors (see below), whose sum is σ = 905256. Its totient is φ = 901024.

The previous prime is 903109. The next prime is 903143. The reversal of 903139 is 931309.

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 903139 - 2¹³ = 894947 is a prime.

It is an Ulam number.

It is a Duffinian number.

903139 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (903109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (226314).

2⁹⁰³¹³⁹ is an apocalyptic number.

903139 is a deficient number, since it is larger than the sum of its proper divisors (2117).

903139 is a wasteful number, since it uses less digits than its factorization.

903139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 903139 is about 950.3362562798. The cubic root of 903139 is about 96.6610552959.

The spelling of 903139 in words is "nine hundred three thousand, one hundred thirty-nine".