804448404 has 18 divisors (see below), whose sum is σ = 2033466890. Its totient is φ = 268149456.

The previous prime is 804448397. The next prime is 804448409. The reversal of 804448404 is 404844408.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 803722500 + 725904 = 28350^2 + 852^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 22345789 = 804448404 / (8 + 0 + 4 + 4 + 4 + 8 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804448409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11172859 + ... + 11172930.

Almost surely, 2^804448404 is an apocalyptic number.

It is an amenable number.

804448404 is an abundant number, since it is smaller than the sum of its proper divisors (1229018486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804448404 is a wasteful number, since it uses less digits than its factorization.

804448404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22345799 (or 22345794 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 804448404 is about 28362.7996502461. The cubic root of 804448404 is about 930.0352258596.

The spelling of 804448404 in words is "eight hundred four million, four hundred forty-eight thousand, four hundred four".