3906840996 has 72 divisors (see below), whose sum is σ = 10479792960. Its totient is φ = 1224531264.

The previous prime is 3906840979. The next prime is 3906841007. The reversal of 3906840996 is 6990486093.

It is a happy number.

3906840996 is a `hidden beast` number, since 3 + 90 + 68 + 409 + 96 = 666.

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 23 ways as a sum of consecutive naturals, for example, 8866 + ... + 88838.

It is an arithmetic number, because the mean of its divisors is an integer number (145552680).

Almost surely, 2^3906840996 is an apocalyptic number.

3906840996 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 3906840996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5239896480).

3906840996 is an abundant number, since it is smaller than the sum of its proper divisors (6572951964).

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

3906840996 is a wasteful number, since it uses less digits than its factorization.

3906840996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80065 (or 80060 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 3906840996 is about 62504.7277891841. The cubic root of 3906840996 is about 1574.9807332488.

The spelling of 3906840996 in words is "three billion, nine hundred six million, eight hundred forty thousand, nine hundred ninety-six".