3962644887936 has 256 divisors, whose sum is σ = 12091038220800. Its totient is φ = 1126403604480.

The previous prime is 3962644887931. The next prime is 3962644887953. The reversal of 3962644887936 is 6397884462693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3962644887931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437421775 + ... + 437430833.

It is an arithmetic number, because the mean of its divisors is an integer number (47230618050).

Almost surely, 2^{3962644887936} 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 3962644887936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6045519110400).

3962644887936 is an abundant number, since it is smaller than the sum of its proper divisors (8128393332864).

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

3962644887936 is a wasteful number, since it uses less digits than its factorization.

3962644887936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9897 (or 9885 counting only the distinct ones).

The product of its digits is 2257403904, while the sum is 75.

The spelling of 3962644887936 in words is "three trillion, nine hundred sixty-two billion, six hundred forty-four million, eight hundred eighty-seven thousand, nine hundred thirty-six".