804454121 has 4 divisors (see below), whose sum is σ = 805018500. Its totient is φ = 803889744.

The previous prime is 804454109. The next prime is 804454159. The reversal of 804454121 is 121454408.

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 37994896 + 766459225 = 6164^2 + 27685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804454121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804454181) 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, 280046 + ... + 282903.

It is an arithmetic number, because the mean of its divisors is an integer number (201254625).

Almost surely, 2^804454121 is an apocalyptic number.

It is an amenable number.

804454121 is a deficient number, since it is larger than the sum of its proper divisors (564379).

804454121 is a wasteful number, since it uses less digits than its factorization.

804454121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564378.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 804454121 is about 28362.9004334888. The cubic root of 804454121 is about 930.0374290251.

The spelling of 804454121 in words is "eight hundred four million, four hundred fifty-four thousand, one hundred twenty-one".