840808044004 has 12 divisors (see below), whose sum is σ = 1471450520764. Its totient is φ = 420393609504.

The previous prime is 840808043987. The next prime is 840808044073. The reversal of 840808044004 is 400440808048.

It can be written as a sum of positive squares in 2 ways, for example, as 429349941504 + 411458102500 = 655248^2 + 641450^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420007 + ... + 2745550.

Almost surely, 2^840808044004 is an apocalyptic number.

It is an amenable number.

840808044004 is a deficient number, since it is larger than the sum of its proper divisors (630642476760).

840808044004 is a wasteful number, since it uses less digits than its factorization.

840808044004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206254 (or 5206252 counting only the distinct ones).

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

The spelling of 840808044004 in words is "eight hundred forty billion, eight hundred eight million, forty-four thousand, four".