3899393568 has 192 divisors, whose sum is σ = 13193349120. Its totient is φ = 1097369856.

The previous prime is 3899393551. The next prime is 3899393569. The reversal of 3899393568 is 8653939983.

3899393568 is a `hidden beast` number, since 38 + 9 + 9 + 39 + 3 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3899393569) 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 31 ways as a sum of consecutive naturals, for example, 400405 + ... + 410027.

It is an arithmetic number, because the mean of its divisors is an integer number (68715360).

Almost surely, 2^3899393568 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 3899393568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6596674560).

3899393568 is an abundant number, since it is smaller than the sum of its proper divisors (9293955552).

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

3899393568 is a wasteful number, since it uses less digits than its factorization.

3899393568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716 (or 9702 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The square root of 3899393568 is about 62445.1244533951. The cubic root of 3899393568 is about 1573.9793259998.

The spelling of 3899393568 in words is "three billion, eight hundred ninety-nine million, three hundred ninety-three thousand, five hundred sixty-eight".