8689009440 has 48 divisors (see below), whose sum is σ = 27370381248. Its totient is φ = 2317069056.

The previous prime is 8689009411. The next prime is 8689009513. The reversal of 8689009440 is 449009868.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×8689009440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8689009440.

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, 9050572 + ... + 9051531.

It is an arithmetic number, because the mean of its divisors is an integer number (570216276).

Almost surely, 2^8689009440 is an apocalyptic number.

8689009440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8689009440 is an abundant number, since it is smaller than the sum of its proper divisors (18681371808).

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

8689009440 is a wasteful number, since it uses less digits than its factorization.

8689009440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18102121 (or 18102113 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 8689009440 is about 93214.8563266607. The cubic root of 8689009440 is about 2055.8436824434.

The spelling of 8689009440 in words is "eight billion, six hundred eighty-nine million, nine thousand, four hundred forty".