8449685888 has 64 divisors (see below), whose sum is σ = 19300619520. Its totient is φ = 3609530880.

The previous prime is 8449685887. The next prime is 8449685911. The reversal of 8449685888 is 8885869448.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-4 number, since 4×8449685888⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449685887) 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 7 ways as a sum of consecutive naturals, for example, 263495 + ... + 293817.

It is an arithmetic number, because the mean of its divisors is an integer number (301572180).

Almost surely, 2^8449685888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8449685888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9650309760).

8449685888 is an abundant number, since it is smaller than the sum of its proper divisors (10850933632).

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

8449685888 is a wasteful number, since it uses less digits than its factorization.

8449685888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30655 (or 30643 counting only the distinct ones).

The product of its digits is 141557760, while the sum is 68.

The square root of 8449685888 is about 91922.1729943325. The cubic root of 8449685888 is about 2036.7928177109.

The spelling of 8449685888 in words is "eight billion, four hundred forty-nine million, six hundred eighty-five thousand, eight hundred eighty-eight".