3899394816 has 72 divisors (see below), whose sum is σ = 10407720960. Its totient is φ = 1296086016.

The previous prime is 3899394787. The next prime is 3899394853. The reversal of 3899394816 is 6184939983.

It is a self number, because there is not a number n which added to its sum of digits gives 3899394816.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 268641 + ... + 282783.

It is an arithmetic number, because the mean of its divisors is an integer number (144551680).

Almost surely, 2^3899394816 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 3899394816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5203860480).

3899394816 is an abundant number, since it is smaller than the sum of its proper divisors (6508326144).

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

3899394816 is a wasteful number, since it uses less digits than its factorization.

3899394816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521 (or 14507 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The square root of 3899394816 is about 62445.1344461680. The cubic root of 3899394816 is about 1573.9794939170.

The spelling of 3899394816 in words is "three billion, eight hundred ninety-nine million, three hundred ninety-four thousand, eight hundred sixteen".