904039 has 4 divisors (see below), whose sum is σ = 951640. Its totient is φ = 856440.

The previous prime is 904027. The next prime is 904049. The reversal of 904039 is 930409.

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 904039 - 2⁹ = 903527 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 (904019) 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, 23772 + ... + 23809.

It is an arithmetic number, because the mean of its divisors is an integer number (237910).

2⁹⁰⁴⁰³⁹ is an apocalyptic number.

904039 is a deficient number, since it is larger than the sum of its proper divisors (47601).

904039 is a wasteful number, since it uses less digits than its factorization.

904039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47600.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 904039 is about 950.8096549783. The cubic root of 904039 is about 96.6931530011.

The spelling of 904039 in words is "nine hundred four thousand, thirty-nine".