3989613787320 has 512 divisors, whose sum is σ = 14642006446080. Its totient is φ = 848886497280.

The previous prime is 3989613787267. The next prime is 3989613787333. The reversal of 3989613787320 is 237873169893.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2001812244 + ... + 2001814236.

It is an arithmetic number, because the mean of its divisors is an integer number (28597668840).

Almost surely, 2^{3989613787320} is an apocalyptic number.

3989613787320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3989613787320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7321003223040).

3989613787320 is an abundant number, since it is smaller than the sum of its proper divisors (10652392658760).

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

3989613787320 is a wasteful number, since it uses less digits than its factorization.

3989613787320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495 (or 3491 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 66.

The spelling of 3989613787320 in words is "three trillion, nine hundred eighty-nine billion, six hundred thirteen million, seven hundred eighty-seven thousand, three hundred twenty".