3989705352516 has 240 divisors, whose sum is σ = 11896446481920. Its totient is φ = 1155044551680.

The previous prime is 3989705352511. The next prime is 3989705352557. The reversal of 3989705352516 is 6152535079893.

It is a happy number.

3989705352516 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 70 + 535 + 25 + 1 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (3989705352511) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 332164951 + ... + 332176961.

It is an arithmetic number, because the mean of its divisors is an integer number (49568527008).

Almost surely, 2^{3989705352516} is an apocalyptic number.

3989705352516 is a gapful number since it is divisible by the number (36) 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 3989705352516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5948223240960).

3989705352516 is an abundant number, since it is smaller than the sum of its proper divisors (7906741129404).

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

3989705352516 is a wasteful number, since it uses less digits than its factorization.

3989705352516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16696 (or 16685 counting only the distinct ones).

The product of its (nonzero) digits is 61236000, while the sum is 63.

The spelling of 3989705352516 in words is "three trillion, nine hundred eighty-nine billion, seven hundred five million, three hundred fifty-two thousand, five hundred sixteen".