904045 has 8 divisors (see below), whose sum is σ = 1108224. Its totient is φ = 707664.

The previous prime is 904027. The next prime is 904049. The reversal of 904045 is 540409.

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

It is a cyclic number.

It is not a de Polignac number, because 904045 - 2¹¹ = 901997 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904049) 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, 1689 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (138528).

2⁹⁰⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

904045 is a deficient number, since it is larger than the sum of its proper divisors (204179).

904045 is a wasteful number, since it uses less digits than its factorization.

904045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 904045 is about 950.8128101787. The cubic root of 904045 is about 96.6933669143.

It can be divided in two parts, 90404 and 5, that added together give a palindrome (90409).

The spelling of 904045 in words is "nine hundred four thousand, forty-five".