904239 has 24 divisors (see below), whose sum is σ = 1544192. Its totient is φ = 498960.

The previous prime is 904219. The next prime is 904261. The reversal of 904239 is 932409.

It is not a de Polignac number, because 904239 - 2⁵ = 904207 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1722 + ... + 2184.

2⁹⁰⁴²³⁹ is an apocalyptic number.

904239 is a deficient number, since it is larger than the sum of its proper divisors (639953).

904239 is a wasteful number, since it uses less digits than its factorization.

904239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 904239 is about 950.9148226839. The cubic root of 904239 is about 96.7002829312.

The spelling of 904239 in words is "nine hundred four thousand, two hundred thirty-nine".