3949956816606 has 96 divisors (see below), whose sum is σ = 9144524832768. Its totient is φ = 1229979764160.

The previous prime is 3949956816599. The next prime is 3949956816607. The reversal of 3949956816606 is 6066186599493.

3949956816606 is a `hidden beast` number, since 3 + 9 + 4 + 9 + 9 + 5 + 6 + 8 + 1 + 6 + 606 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949956816607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1868821 + ... + 3375263.

It is an arithmetic number, because the mean of its divisors is an integer number (95255467008).

Almost surely, 2^{3949956816606} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949956816606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4572262416384).

3949956816606 is an abundant number, since it is smaller than the sum of its proper divisors (5194568016162).

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

3949956816606 is a wasteful number, since it uses less digits than its factorization.

3949956816606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506646 (or 1506643 counting only the distinct ones).

The product of its (nonzero) digits is 453496320, while the sum is 72.

The spelling of 3949956816606 in words is "three trillion, nine hundred forty-nine billion, nine hundred fifty-six million, eight hundred sixteen thousand, six hundred six".