3999064608 has 288 divisors, whose sum is σ = 14705832960. Its totient is φ = 1038562560.

The previous prime is 3999064571. The next prime is 3999064651. The reversal of 3999064608 is 8064609993.

It is a happy number.

3999064608 is a `hidden beast` number, since 3 + 99 + 90 + 6 + 460 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 595413 + ... + 602091.

It is an arithmetic number, because the mean of its divisors is an integer number (51061920).

Almost surely, 2^3999064608 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 3999064608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7352916480).

3999064608 is an abundant number, since it is smaller than the sum of its proper divisors (10706768352).

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

3999064608 is a wasteful number, since it uses less digits than its factorization.

3999064608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 3999064608 is about 63238.1578479323. The cubic root of 3999064608 is about 1587.2773054680.

The spelling of 3999064608 in words is "three billion, nine hundred ninety-nine million, sixty-four thousand, six hundred eight".