7989555600 has 360 divisors, whose sum is σ = 30827526912. Its totient is φ = 1902873600.

The previous prime is 7989555589. The next prime is 7989555601. The reversal of 7989555600 is 65559897.

It is a happy number.

7989555600 is a `hidden beast` number, since 7 + 9 + 89 + 5 + 556 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is not an unprimeable number, because it can be changed into a prime (7989555601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1448047 + ... + 1453553.

Almost surely, 2^7989555600 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 7989555600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15413763456).

7989555600 is an abundant number, since it is smaller than the sum of its proper divisors (22837971312).

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

7989555600 is a wasteful number, since it uses less digits than its factorization.

7989555600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575 (or 5561 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 54.

The square root of 7989555600 is about 89384.3140601303. The cubic root of 7989555600 is about 1999.1292542893.

The spelling of 7989555600 in words is "seven billion, nine hundred eighty-nine million, five hundred fifty-five thousand, six hundred".