904423 has 8 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 805728.

The previous prime is 904399. The next prime is 904441. The reversal of 904423 is 324409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 904394 and 904403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904483) 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 7 ways as a sum of consecutive naturals, for example, 823 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2⁹⁰⁴⁴²³ is an apocalyptic number.

904423 is a deficient number, since it is larger than the sum of its proper divisors (103577).

904423 is a wasteful number, since it uses less digits than its factorization.

904423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 904423 is about 951.0115667015. The cubic root of 904423 is about 96.7068415385.

Subtracting from 904423 its sum of digits (22), we obtain a square (904401 = 951²).

The spelling of 904423 in words is "nine hundred four thousand, four hundred twenty-three".