800840400404 has 24 divisors (see below), whose sum is σ = 1528988498688. Its totient is φ = 363991847040.

The previous prime is 800840400403. The next prime is 800840400427. The reversal of 800840400404 is 404004048008.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800840400401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45572 + ... + 1266395.

It is an arithmetic number, because the mean of its divisors is an integer number (63707854112).

Almost surely, 2^800840400404 is an apocalyptic number.

It is an amenable number.

800840400404 is a deficient number, since it is larger than the sum of its proper divisors (728148098284).

800840400404 is a wasteful number, since it uses less digits than its factorization.

800840400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325855 (or 1325853 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The spelling of 800840400404 in words is "eight hundred billion, eight hundred forty million, four hundred thousand, four hundred four".