904491254404321 has 4 divisors (see below), whose sum is σ = 935680608004500. Its totient is φ = 873301900804144.

The previous prime is 904491254404151. The next prime is 904491254404343. The reversal of 904491254404321 is 123404452194409.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680070481141921 + 224420773262400 = 26078161^2 + 14980680^2 .

It is a cyclic number.

It is not a de Polignac number, because 904491254404321 - 2³⁵ = 904456894665953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (904491254408321) 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, 15594676800046 + ... + 15594676800103.

It is an arithmetic number, because the mean of its divisors is an integer number (233920152001125).

Almost surely, 2^{904491254404321} is an apocalyptic number.

It is an amenable number.

904491254404321 is a deficient number, since it is larger than the sum of its proper divisors (31189353600179).

904491254404321 is a wasteful number, since it uses less digits than its factorization.

904491254404321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31189353600178.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 904491254404321 in words is "nine hundred four trillion, four hundred ninety-one billion, two hundred fifty-four million, four hundred four thousand, three hundred twenty-one".