947362993 has 2 divisors, whose sum is σ = 947362994. Its totient is φ = 947362992.

The previous prime is 947362957. The next prime is 947363017. The reversal of 947362993 is 399263749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566059264 + 381303729 = 23792^2 + 19527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947362993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947362993.

It is not a weakly prime, because it can be changed into another prime (947362093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473681496 + 473681497.

It is an arithmetic number, because the mean of its divisors is an integer number (473681497).

Almost surely, 2^947362993 is an apocalyptic number.

It is an amenable number.

947362993 is a deficient number, since it is larger than the sum of its proper divisors (1).

947362993 is an equidigital number, since it uses as much as digits as its factorization.

947362993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 52.

The square root of 947362993 is about 30779.2623855738. The cubic root of 947362993 is about 982.1371494723.

The spelling of 947362993 in words is "nine hundred forty-seven million, three hundred sixty-two thousand, nine hundred ninety-three".