3959639034647 has 2 divisors, whose sum is σ = 3959639034648. Its totient is φ = 3959639034646.

The previous prime is 3959639034613. The next prime is 3959639034697. The reversal of 3959639034647 is 7464309369593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3959639034647 - 2⁶ = 3959639034583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959639034697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979819517323 + 1979819517324.

It is an arithmetic number, because the mean of its divisors is an integer number (1979819517324).

Almost surely, 2^{3959639034647} is an apocalyptic number.

3959639034647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959639034647 is an equidigital number, since it uses as much as digits as its factorization.

3959639034647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396809280, while the sum is 68.

The spelling of 3959639034647 in words is "three trillion, nine hundred fifty-nine billion, six hundred thirty-nine million, thirty-four thousand, six hundred forty-seven".