947423173 has 2 divisors, whose sum is σ = 947423174. Its totient is φ = 947423172.

The previous prime is 947423161. The next prime is 947423179. The reversal of 947423173 is 371324749.

947423173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514699969 + 432723204 = 22687^2 + 20802^2 .

It is an emirp because it is prime and its reverse (371324749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947423173 - 2²⁵ = 913868741 is a prime.

It is a super-2 number, since 2×947423173² = 1795221337474775858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947423179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473711586 + 473711587.

It is an arithmetic number, because the mean of its divisors is an integer number (473711587).

Almost surely, 2^947423173 is an apocalyptic number.

It is an amenable number.

947423173 is a deficient number, since it is larger than the sum of its proper divisors (1).

947423173 is an equidigital number, since it uses as much as digits as its factorization.

947423173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 947423173 is about 30780.2399763225. The cubic root of 947423173 is about 982.1579453596.

The spelling of 947423173 in words is "nine hundred forty-seven million, four hundred twenty-three thousand, one hundred seventy-three".