947712389389 has 2 divisors, whose sum is σ = 947712389390. Its totient is φ = 947712389388.

The previous prime is 947712389383. The next prime is 947712389411. The reversal of 947712389389 is 983983217749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946086928900 + 1625460489 = 972670^2 + 40317^2 .

It is a cyclic number.

It is not a de Polignac number, because 947712389389 - 2¹¹ = 947712387341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947712389383) 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, 473856194694 + 473856194695.

It is an arithmetic number, because the mean of its divisors is an integer number (473856194695).

Almost surely, 2^947712389389 is an apocalyptic number.

It is an amenable number.

947712389389 is a deficient number, since it is larger than the sum of its proper divisors (1).

947712389389 is an equidigital number, since it uses as much as digits as its factorization.

947712389389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164602368, while the sum is 70.

The spelling of 947712389389 in words is "nine hundred forty-seven billion, seven hundred twelve million, three hundred eighty-nine thousand, three hundred eighty-nine".