947395663 has 2 divisors, whose sum is σ = 947395664. Its totient is φ = 947395662.

The previous prime is 947395637. The next prime is 947395721. The reversal of 947395663 is 366593749.

947395663 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947395663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947395663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947395063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473697831 + 473697832.

It is an arithmetic number, because the mean of its divisors is an integer number (473697832).

Almost surely, 2^947395663 is an apocalyptic number.

947395663 is a deficient number, since it is larger than the sum of its proper divisors (1).

947395663 is an equidigital number, since it uses as much as digits as its factorization.

947395663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 52.

The square root of 947395663 is about 30779.7930954709. The cubic root of 947395663 is about 982.1484390738.

The spelling of 947395663 in words is "nine hundred forty-seven million, three hundred ninety-five thousand, six hundred sixty-three".