3991682983906 has 16 divisors (see below), whose sum is σ = 6034958312544. Its totient is φ = 1980073711584.

The previous prime is 3991682983901. The next prime is 3991682983907. The reversal of 3991682983906 is 6093892861993.

3991682983906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3991682983901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10690731 + ... + 11057806.

It is an arithmetic number, because the mean of its divisors is an integer number (377184894534).

Almost surely, 2^{3991682983906} is an apocalyptic number.

3991682983906 is a deficient number, since it is larger than the sum of its proper divisors (2043275328638).

3991682983906 is a wasteful number, since it uses less digits than its factorization.

3991682983906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21749265.

The product of its (nonzero) digits is 272097792, while the sum is 73.

The spelling of 3991682983906 in words is "three trillion, nine hundred ninety-one billion, six hundred eighty-two million, nine hundred eighty-three thousand, nine hundred six".