3965957 has 4 divisors (see below), whose sum is σ = 3986700. Its totient is φ = 3945216.

The previous prime is 3965939. The next prime is 3965963. The reversal of 3965957 is 7595693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2709316 + 1256641 = 1646^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 3965957 - 2⁸ = 3965701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10082 + ... + 10467.

It is an arithmetic number, because the mean of its divisors is an integer number (996675).

Almost surely, 2^3965957 is an apocalyptic number.

It is an amenable number.

3965957 is a deficient number, since it is larger than the sum of its proper divisors (20743).

3965957 is a wasteful number, since it uses less digits than its factorization.

3965957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20742.

The product of its digits is 255150, while the sum is 44.

The square root of 3965957 is about 1991.4710643140. The cubic root of 3965957 is about 158.2884891161.

The spelling of 3965957 in words is "three million, nine hundred sixty-five thousand, nine hundred fifty-seven".