3969988165098 has 96 divisors (see below), whose sum is σ = 9405608509440. Its totient is φ = 1204771760640.

The previous prime is 3969988165027. The next prime is 3969988165163. The reversal of 3969988165098 is 8905618899693.

It is a happy number.

3969988165098 is a `hidden beast` number, since 3 + 9 + 6 + 9 + 98 + 8 + 16 + 509 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21431511 + ... + 21615957.

It is an arithmetic number, because the mean of its divisors is an integer number (97975088640).

Almost surely, 2^{3969988165098} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3969988165098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4702804254720).

3969988165098 is an abundant number, since it is smaller than the sum of its proper divisors (5435620344342).

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

3969988165098 is a wasteful number, since it uses less digits than its factorization.

3969988165098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186772 (or 186769 counting only the distinct ones).

The product of its (nonzero) digits is 1813985280, while the sum is 81.

The spelling of 3969988165098 in words is "three trillion, nine hundred sixty-nine billion, nine hundred eighty-eight million, one hundred sixty-five thousand, ninety-eight".