39839791664679 has 16 divisors (see below), whose sum is σ = 54021370919040. Its totient is φ = 26109058667360.

The previous prime is 39839791664671. The next prime is 39839791664681. The reversal of 39839791664679 is 97646619793893.

39839791664679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39839791664679 - 2³ = 39839791664671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39839791664595 and 39839791664604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39839791664671) 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 in 15 ways as a sum of consecutive naturals, for example, 4612069 + ... + 10047425.

It is an arithmetic number, because the mean of its divisors is an integer number (3376335682440).

Almost surely, 2^{39839791664679} is an apocalyptic number.

39839791664679 is a deficient number, since it is larger than the sum of its proper divisors (14181579254361).

39839791664679 is a wasteful number, since it uses less digits than its factorization.

39839791664679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476830.

The product of its digits is 19999187712, while the sum is 87.

The spelling of 39839791664679 in words is "thirty-nine trillion, eight hundred thirty-nine billion, seven hundred ninety-one million, six hundred sixty-four thousand, six hundred seventy-nine".