3949656 has 16 divisors (see below), whose sum is σ = 9874200. Its totient is φ = 1316544.

The previous prime is 3949651. The next prime is 3949657. The reversal of 3949656 is 6569493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949651) 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, 82261 + ... + 82308.

Almost surely, 2^3949656 is an apocalyptic number.

It is an amenable number.

3949656 is an abundant number, since it is smaller than the sum of its proper divisors (5924544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3949656 is a wasteful number, since it uses less digits than its factorization.

3949656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164578 (or 164574 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

The square root of 3949656 is about 1987.3741469587. The cubic root of 3949656 is about 158.0713238844.

The spelling of 3949656 in words is "three million, nine hundred forty-nine thousand, six hundred fifty-six".