39318384947 has 2 divisors, whose sum is σ = 39318384948. Its totient is φ = 39318384946.

The previous prime is 39318384913. The next prime is 39318385003. The reversal of 39318384947 is 74948381393.

It is a weak prime.

It is an emirp because it is prime and its reverse (74948381393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39318384947 - 2⁶ = 39318384883 is a prime.

It is not a weakly prime, because it can be changed into another prime (39318374947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19659192473 + 19659192474.

It is an arithmetic number, because the mean of its divisors is an integer number (19659192474).

Almost surely, 2^39318384947 is an apocalyptic number.

39318384947 is a deficient number, since it is larger than the sum of its proper divisors (1).

39318384947 is an equidigital number, since it uses as much as digits as its factorization.

39318384947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 59.

The spelling of 39318384947 in words is "thirty-nine billion, three hundred eighteen million, three hundred eighty-four thousand, nine hundred forty-seven".