3979771858944 has 312 divisors, whose sum is σ = 13406124513600. Its totient is φ = 1137074061312.

The previous prime is 3979771858927. The next prime is 3979771858981. The reversal of 3979771858944 is 4498581779793.

3979771858944 is a `hidden beast` number, since 397 + 9 + 7 + 7 + 185 + 8 + 9 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12486979 + ... + 12801725.

It is an arithmetic number, because the mean of its divisors is an integer number (42968347800).

Almost surely, 2^{3979771858944} 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 3979771858944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6703062256800).

3979771858944 is an abundant number, since it is smaller than the sum of its proper divisors (9426352654656).

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

3979771858944 is an equidigital number, since it uses as much as digits as its factorization.

3979771858944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314798 (or 314759 counting only the distinct ones).

The product of its digits is 3840721920, while the sum is 81.

The spelling of 3979771858944 in words is "three trillion, nine hundred seventy-nine billion, seven hundred seventy-one million, eight hundred fifty-eight thousand, nine hundred forty-four".