844008400804 has 6 divisors (see below), whose sum is σ = 1477014701414. Its totient is φ = 422004200400.

The previous prime is 844008400799. The next prime is 844008400843. The reversal of 844008400804 is 408004800448.

It can be written as a sum of positive squares in only one way, i.e., 818026184704 + 25982216100 = 904448^2 + 161190^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501050097 + ... + 105501050104.

Almost surely, 2^844008400804 is an apocalyptic number.

It is an amenable number.

844008400804 is a deficient number, since it is larger than the sum of its proper divisors (633006300610).

844008400804 is a wasteful number, since it uses less digits than its factorization.

844008400804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211002100205 (or 211002100203 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 844008400804 in words is "eight hundred forty-four billion, eight million, four hundred thousand, eight hundred four".