904394 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 421680.

The previous prime is 904369. The next prime is 904399. The reversal of 904394 is 493409.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (904399) 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 7 ways as a sum of consecutive naturals, for example, 1547 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁹⁰⁴³⁹⁴ is an apocalyptic number.

904394 is a deficient number, since it is larger than the sum of its proper divisors (547126).

904394 is a wasteful number, since it uses less digits than its factorization.

904394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 904394 is about 950.9963196564. The cubic root of 904394 is about 96.7058079040.

The spelling of 904394 in words is "nine hundred four thousand, three hundred ninety-four".