3941937891 has 24 divisors (see below), whose sum is σ = 5754434400. Its totient is φ = 2600163456.

The previous prime is 3941937871. The next prime is 3941937919. The reversal of 3941937891 is 1987391493.

It is a happy number.

It is not a de Polignac number, because 3941937891 - 2⁶ = 3941937827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3941937851) 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 23 ways as a sum of consecutive naturals, for example, 347095 + ... + 358271.

It is an arithmetic number, because the mean of its divisors is an integer number (239768100).

Almost surely, 2^3941937891 is an apocalyptic number.

3941937891 is a deficient number, since it is larger than the sum of its proper divisors (1812496509).

3941937891 is a wasteful number, since it uses less digits than its factorization.

3941937891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11595 (or 11592 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 3941937891 is about 62784.8539936186. The cubic root of 3941937891 is about 1579.6829320234.

The spelling of 3941937891 in words is "three billion, nine hundred forty-one million, nine hundred thirty-seven thousand, eight hundred ninety-one".