3996625808 has 60 divisors (see below), whose sum is σ = 9068420700. Its totient is φ = 1701294336.

The previous prime is 3996625799. The next prime is 3996625811. The reversal of 3996625808 is 8085266993.

It can be written as a sum of positive squares in 2 ways, for example, as 1979538064 + 2017087744 = 44492^2 + 44912^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99710 + ... + 133922.

It is an arithmetic number, because the mean of its divisors is an integer number (151140345).

Almost surely, 2^3996625808 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 3996625808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4534210350).

3996625808 is an abundant number, since it is smaller than the sum of its proper divisors (5071794892).

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

3996625808 is a wasteful number, since it uses less digits than its factorization.

3996625808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34384 (or 34371 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The square root of 3996625808 is about 63218.8722455565. The cubic root of 3996625808 is about 1586.9545767427.

The spelling of 3996625808 in words is "three billion, nine hundred ninety-six million, six hundred twenty-five thousand, eight hundred eight".