3856939679744 has 272 divisors, whose sum is σ = 8180843650560. Its totient is φ = 1815965859840.

The previous prime is 3856939679737. The next prime is 3856939679753. The reversal of 3856939679744 is 4479769396583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15007547264 + ... + 15007547520.

Almost surely, 2^{3856939679744} 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 3856939679744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4090421825280).

3856939679744 is an abundant number, since it is smaller than the sum of its proper divisors (4323903970816).

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

3856939679744 is an frugal number, since it uses more digits than its factorization.

3856939679744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 462 counting only the distinct ones).

The product of its digits is 7407106560, while the sum is 80.

The spelling of 3856939679744 in words is "three trillion, eight hundred fifty-six billion, nine hundred thirty-nine million, six hundred seventy-nine thousand, seven hundred forty-four".