3959656 has 16 divisors (see below), whose sum is σ = 7583040. Its totient is φ = 1937520.

The previous prime is 3959653. The next prime is 3959663. The reversal of 3959656 is 6569593.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3959651) 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, 4890 + ... + 5641.

It is an arithmetic number, because the mean of its divisors is an integer number (473940).

Almost surely, 2^3959656 is an apocalyptic number.

It is an amenable number.

3959656 is a deficient number, since it is larger than the sum of its proper divisors (3623384).

3959656 is a wasteful number, since it uses less digits than its factorization.

3959656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584 (or 10580 counting only the distinct ones).

The product of its digits is 218700, while the sum is 43.

The square root of 3959656 is about 1989.8884390840. Note that the first 3 decimals coincide. The cubic root of 3959656 is about 158.2046165949.

It can be divided in two parts, 39 and 59656, that added together give a palindrome (59695).

The spelling of 3959656 in words is "three million, nine hundred fifty-nine thousand, six hundred fifty-six".