3936640252 has 12 divisors (see below), whose sum is σ = 6889599136. Its totient is φ = 1968183360.

The previous prime is 3936640247. The next prime is 3936640313. The reversal of 3936640252 is 2520466393.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58477 + ... + 106267.

Almost surely, 2^3936640252 is an apocalyptic number.

It is an amenable number.

3936640252 is a deficient number, since it is larger than the sum of its proper divisors (2952958884).

3936640252 is a wasteful number, since it uses less digits than its factorization.

3936640252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68388 (or 68386 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 3936640252 is about 62742.6509800152. The cubic root of 3936640252 is about 1578.9749603067.

The spelling of 3936640252 in words is "three billion, nine hundred thirty-six million, six hundred forty thousand, two hundred fifty-two".