3989951916 has 24 divisors (see below), whose sum is σ = 9312790704. Its totient is φ = 1329569280.

The previous prime is 3989951909. The next prime is 3989951929. The reversal of 3989951916 is 6191599893.

It is a self number, because there is not a number n which added to its sum of digits gives 3989951916.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10425 + ... + 89936.

It is an arithmetic number, because the mean of its divisors is an integer number (388032946).

Almost surely, 2^3989951916 is an apocalyptic number.

It is an amenable number.

3989951916 is an abundant number, since it is smaller than the sum of its proper divisors (5322838788).

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

3989951916 is a wasteful number, since it uses less digits than its factorization.

3989951916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103681 (or 103679 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 60.

The square root of 3989951916 is about 63166.0661748062. The cubic root of 3989951916 is about 1586.0707424978.

The spelling of 3989951916 in words is "three billion, nine hundred eighty-nine million, nine hundred fifty-one thousand, nine hundred sixteen".