840484888040 has 64 divisors (see below), whose sum is σ = 2172562421760. Its totient is φ = 286657505280.

The previous prime is 840484888031. The next prime is 840484888057. The reversal of 840484888040 is 40888484048.

It is a super-2 number, since 2×840484888040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7804457 + ... + 7911416.

It is an arithmetic number, because the mean of its divisors is an integer number (33946287840).

Almost surely, 2^840484888040 is an apocalyptic number.

It is an amenable number.

840484888040 is an abundant number, since it is smaller than the sum of its proper divisors (1332077533720).

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

840484888040 is a wasteful number, since it uses less digits than its factorization.

840484888040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15716082 (or 15716078 counting only the distinct ones).

The product of its (nonzero) digits is 8388608, while the sum is 56.

The spelling of 840484888040 in words is "eight hundred forty billion, four hundred eighty-four million, eight hundred eighty-eight thousand, forty".