3936636217 has 2 divisors, whose sum is σ = 3936636218. Its totient is φ = 3936636216.

The previous prime is 3936636211. The next prime is 3936636241. The reversal of 3936636217 is 7126366393.

3936636217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3631749696 + 304886521 = 60264^2 + 17461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3936636217 is a prime.

It is not a weakly prime, because it can be changed into another prime (3936636211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968318108 + 1968318109.

It is an arithmetic number, because the mean of its divisors is an integer number (1968318109).

Almost surely, 2^3936636217 is an apocalyptic number.

It is an amenable number.

3936636217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3936636217 is an equidigital number, since it uses as much as digits as its factorization.

3936636217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 46.

The square root of 3936636217 is about 62742.6188248466. The cubic root of 3936636217 is about 1578.9744208309.

The spelling of 3936636217 in words is "three billion, nine hundred thirty-six million, six hundred thirty-six thousand, two hundred seventeen".