3957172 has 6 divisors (see below), whose sum is σ = 6925058. Its totient is φ = 1978584.

The previous prime is 3957169. The next prime is 3957179. The reversal of 3957172 is 2717593.

3957172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3189796 + 767376 = 1786^2 + 876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494643 + ... + 494650.

Almost surely, 2^3957172 is an apocalyptic number.

It is an amenable number.

3957172 is a deficient number, since it is larger than the sum of its proper divisors (2967886).

3957172 is a wasteful number, since it uses less digits than its factorization.

3957172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989297 (or 989295 counting only the distinct ones).

The product of its digits is 13230, while the sum is 34.

The square root of 3957172 is about 1989.2641855721. The cubic root of 3957172 is about 158.1715276538.

The spelling of 3957172 in words is "three million, nine hundred fifty-seven thousand, one hundred seventy-two".