7989534336 has 256 divisors, whose sum is σ = 26570592000. Its totient is φ = 2074017792.

The previous prime is 7989534323. The next prime is 7989534337. The reversal of 7989534336 is 6334359897.

It is a happy number.

It is a super-2 number, since 2×7989534336² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7989534337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1322170 + ... + 1328198.

It is an arithmetic number, because the mean of its divisors is an integer number (103791375).

Almost surely, 2^7989534336 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 7989534336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13285296000).

7989534336 is an abundant number, since it is smaller than the sum of its proper divisors (18581057664).

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

7989534336 is a wasteful number, since it uses less digits than its factorization.

7989534336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099 (or 6087 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 57.

The square root of 7989534336 is about 89384.1951130064. The cubic root of 7989534336 is about 1999.1274807438.

The spelling of 7989534336 in words is "seven billion, nine hundred eighty-nine million, five hundred thirty-four thousand, three hundred thirty-six".