3951979192986 has 96 divisors (see below), whose sum is σ = 9146167833600. Its totient is φ = 1134404013600.

The previous prime is 3951979192979. The next prime is 3951979193011. The reversal of 3951979192986 is 6892919791593.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201920581 + ... + 201940151.

It is an arithmetic number, because the mean of its divisors is an integer number (95272581600).

Almost surely, 2^{3951979192986} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3951979192986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4573083916800).

3951979192986 is an abundant number, since it is smaller than the sum of its proper divisors (5194188640614).

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

3951979192986 is a wasteful number, since it uses less digits than its factorization.

3951979192986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34256 (or 34245 counting only the distinct ones).

The product of its digits is 595213920, while the sum is 78.

The spelling of 3951979192986 in words is "three trillion, nine hundred fifty-one billion, nine hundred seventy-nine million, one hundred ninety-two thousand, nine hundred eighty-six".