3957669 has 12 divisors (see below), whose sum is σ = 5825196. Its totient is φ = 2588352.

The previous prime is 3957647. The next prime is 3957671. The reversal of 3957669 is 9667593.

It can be written as a sum of positive squares in 2 ways, for example, as 3560769 + 396900 = 1887^2 + 630^2 .

It is not a de Polignac number, because 3957669 - 2⁵ = 3957637 is a prime.

It is a super-2 number, since 2×3957669² = 31326287827122, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3672 + ... + 4625.

It is an arithmetic number, because the mean of its divisors is an integer number (485433).

Almost surely, 2^3957669 is an apocalyptic number.

It is an amenable number.

3957669 is a deficient number, since it is larger than the sum of its proper divisors (1867527).

3957669 is a wasteful number, since it uses less digits than its factorization.

3957669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8356 (or 8353 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 3957669 is about 1989.3891022120. The cubic root of 3957669 is about 158.1781492141.

The spelling of 3957669 in words is "three million, nine hundred fifty-seven thousand, six hundred sixty-nine".