3939704656 has 10 divisors (see below), whose sum is σ = 7633177802. Its totient is φ = 1969852320.

The previous prime is 3939704653. The next prime is 3939704683. The reversal of 3939704656 is 6564079393.

It can be written as a sum of positive squares in only one way, i.e., 3906250000 + 33454656 = 62500^2 + 5784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939704653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123115755 + ... + 123115786.

Almost surely, 2^3939704656 is an apocalyptic number.

It is an amenable number.

3939704656 is a deficient number, since it is larger than the sum of its proper divisors (3693473146).

3939704656 is a wasteful number, since it uses less digits than its factorization.

3939704656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246231549 (or 246231543 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 52.

The square root of 3939704656 is about 62767.0666512304. The cubic root of 3939704656 is about 1579.3845618880.

The spelling of 3939704656 in words is "three billion, nine hundred thirty-nine million, seven hundred four thousand, six hundred fifty-six".