8440008880 has 40 divisors (see below), whose sum is σ = 19891842912. Its totient is φ = 3329754624.

The previous prime is 8440008869. The next prime is 8440008883. The reversal of 8440008880 is 888000448.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (8440008883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716764 + ... + 728443.

Almost surely, 2^8440008880 is an apocalyptic number.

8440008880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8440008880 is an abundant number, since it is smaller than the sum of its proper divisors (11451834032).

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

8440008880 is a wasteful number, since it uses less digits than its factorization.

8440008880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445293 (or 1445287 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The square root of 8440008880 is about 91869.5209522723. The cubic root of 8440008880 is about 2036.0149746146.

The spelling of 8440008880 in words is "eight billion, four hundred forty million, eight thousand, eight hundred eighty".