3957111 has 24 divisors (see below), whose sum is σ = 6118320. Its totient is φ = 2457216.

The previous prime is 3957103. The next prime is 3957133. The reversal of 3957111 is 1117593.

It is a happy number.

It is not a de Polignac number, because 3957111 - 2³ = 3957103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3952111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12325 + ... + 12641.

It is an arithmetic number, because the mean of its divisors is an integer number (254930).

Almost surely, 2^3957111 is an apocalyptic number.

3957111 is a deficient number, since it is larger than the sum of its proper divisors (2161209).

3957111 is a wasteful number, since it uses less digits than its factorization.

3957111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 412 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 3957111 is about 1989.2488532107. The cubic root of 3957111 is about 158.1707149090.

The spelling of 3957111 in words is "three million, nine hundred fifty-seven thousand, one hundred eleven".