8440008664 has 16 divisors (see below), whose sum is σ = 16335501120. Its totient is φ = 4083875040.

The previous prime is 8440008641. The next prime is 8440008667. The reversal of 8440008664 is 4668000448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440008667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17015899 + ... + 17016394.

It is an arithmetic number, because the mean of its divisors is an integer number (1020968820).

Almost surely, 2^8440008664 is an apocalyptic number.

It is an amenable number.

8440008664 is a deficient number, since it is larger than the sum of its proper divisors (7895492456).

8440008664 is a wasteful number, since it uses less digits than its factorization.

8440008664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34032330 (or 34032326 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 8440008664 is about 91869.5197766920. The cubic root of 8440008664 is about 2036.0149572458.

The spelling of 8440008664 in words is "eight billion, four hundred forty million, eight thousand, six hundred sixty-four".