3942091911 has 16 divisors (see below), whose sum is σ = 5314143744. Its totient is φ = 2599118304.

The previous prime is 3942091873. The next prime is 3942091939. The reversal of 3942091911 is 1191902493.

It is a de Polignac number, because none of the positive numbers 2^k-3942091911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3942091911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942091981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238270 + ... + 254276.

It is an arithmetic number, because the mean of its divisors is an integer number (332133984).

Almost surely, 2^3942091911 is an apocalyptic number.

3942091911 is a deficient number, since it is larger than the sum of its proper divisors (1372051833).

3942091911 is a wasteful number, since it uses less digits than its factorization.

3942091911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16910.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3942091911 is about 62786.0805513451. The cubic root of 3942091911 is about 1579.7035056265.

The spelling of 3942091911 in words is "three billion, nine hundred forty-two million, ninety-one thousand, nine hundred eleven".