84040808440 has 32 divisors (see below), whose sum is σ = 189100692000. Its totient is φ = 33614745984.

The previous prime is 84040808387. The next prime is 84040808471. The reversal of 84040808440 is 4480804048.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 84040808393 and 84040808402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212646 + ... + 1280074.

It is an arithmetic number, because the mean of its divisors is an integer number (5909396625).

Almost surely, 2^84040808440 is an apocalyptic number.

It is an amenable number.

84040808440 is an abundant number, since it is smaller than the sum of its proper divisors (105059883560).

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

84040808440 is a wasteful number, since it uses less digits than its factorization.

84040808440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98599 (or 98595 counting only the distinct ones).

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

The spelling of 84040808440 in words is "eighty-four billion, forty million, eight hundred eight thousand, four hundred forty".