8440884880 has 80 divisors (see below), whose sum is σ = 21064370544. Its totient is φ = 3134177280.

The previous prime is 8440884877. The next prime is 8440884889. The reversal of 8440884880 is 884880448.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14379264 + 8426505616 = 3792^2 + 91796^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×8440884880² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8440884889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56770 + ... + 141790.

Almost surely, 2^8440884880 is an apocalyptic number.

8440884880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8440884880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10532185272).

8440884880 is an abundant number, since it is smaller than the sum of its proper divisors (12623485664).

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

8440884880 is a wasteful number, since it uses less digits than its factorization.

8440884880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85124 (or 85118 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 52.

The square root of 8440884880 is about 91874.2884598297. The cubic root of 8440884880 is about 2036.0854124321.

The spelling of 8440884880 in words is "eight billion, four hundred forty million, eight hundred eighty-four thousand, eight hundred eighty".