84000400804 has 24 divisors (see below), whose sum is σ = 148048709760. Its totient is φ = 41701340736.

The previous prime is 84000400793. The next prime is 84000400823. The reversal of 84000400804 is 40800400048.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 521632 + ... + 663400.

It is an arithmetic number, because the mean of its divisors is an integer number (6168696240).

Almost surely, 2^84000400804 is an apocalyptic number.

It is an amenable number.

84000400804 is a deficient number, since it is larger than the sum of its proper divisors (64048308956).

84000400804 is a wasteful number, since it uses less digits than its factorization.

84000400804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142827 (or 142825 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The spelling of 84000400804 in words is "eighty-four billion, four hundred thousand, eight hundred four".