904089 has 4 divisors (see below), whose sum is σ = 1205456. Its totient is φ = 602724.

The previous prime is 904087. The next prime is 904093. The reversal of 904089 is 980409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 904089 - 2¹ = 904087 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 904089.

It is not an unprimeable number, because it can be changed into a prime (904087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150679 + ... + 150684.

It is an arithmetic number, because the mean of its divisors is an integer number (301364).

2⁹⁰⁴⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

904089 is a deficient number, since it is larger than the sum of its proper divisors (301367).

904089 is a wasteful number, since it uses less digits than its factorization.

904089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301366.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 904089 is about 950.8359479952. The cubic root of 904089 is about 96.6949355822.

The spelling of 904089 in words is "nine hundred four thousand, eighty-nine".