947478373 has 2 divisors, whose sum is σ = 947478374. Its totient is φ = 947478372.

The previous prime is 947478361. The next prime is 947478407. The reversal of 947478373 is 373874749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545596164 + 401882209 = 23358^2 + 20047^2 .

It is an emirp because it is prime and its reverse (373874749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947478373 - 2¹⁷ = 947347301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947478373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947478313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473739186 + 473739187.

It is an arithmetic number, because the mean of its divisors is an integer number (473739187).

Almost surely, 2^947478373 is an apocalyptic number.

It is an amenable number.

947478373 is a deficient number, since it is larger than the sum of its proper divisors (1).

947478373 is an equidigital number, since it uses as much as digits as its factorization.

947478373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 52.

The square root of 947478373 is about 30781.1366424309. The cubic root of 947478373 is about 982.1770195767.

The spelling of 947478373 in words is "nine hundred forty-seven million, four hundred seventy-eight thousand, three hundred seventy-three".