8239449888 has 144 divisors (see below), whose sum is σ = 23874492096. Its totient is φ = 2694827520.

The previous prime is 8239449863. The next prime is 8239449901. The reversal of 8239449888 is 8889449328.

8239449888 is a `hidden beast` number, since 82 + 39 + 449 + 8 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6000370 + ... + 6001742.

It is an arithmetic number, because the mean of its divisors is an integer number (165795084).

Almost surely, 2^8239449888 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 8239449888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11937246048).

8239449888 is an abundant number, since it is smaller than the sum of its proper divisors (15635042208).

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

8239449888 is a wasteful number, since it uses less digits than its factorization.

8239449888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1756 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The square root of 8239449888 is about 90771.4155888295. The cubic root of 8239449888 is about 2019.7583189598.

The spelling of 8239449888 in words is "eight billion, two hundred thirty-nine million, four hundred forty-nine thousand, eight hundred eighty-eight".