8339984640 has 576 divisors, whose sum is σ = 33583737600. Its totient is φ = 1942880256.

The previous prime is 8339984617. The next prime is 8339984641. The reversal of 8339984640 is 464899338.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8339984641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8535832 + ... + 8536808.

It is an arithmetic number, because the mean of its divisors is an integer number (58305100).

Almost surely, 2^8339984640 is an apocalyptic number.

8339984640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8339984640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16791868800).

8339984640 is an abundant number, since it is smaller than the sum of its proper divisors (25243752960).

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

8339984640 is a wasteful number, since it uses less digits than its factorization.

8339984640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The square root of 8339984640 is about 91323.5163580553. The cubic root of 8339984640 is about 2027.9399162900.

The spelling of 8339984640 in words is "eight billion, three hundred thirty-nine million, nine hundred eighty-four thousand, six hundred forty".