947997873 has 12 divisors (see below), whose sum is σ = 1369692688. Its totient is φ = 631831320.

The previous prime is 947997833. The next prime is 947997901. The reversal of 947997873 is 378799749.

947997873 is a `hidden beast` number, since 9 + 479 + 97 + 8 + 73 = 666.

It is not a de Polignac number, because 947997873 - 2²⁴ = 931220657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 947997873.

It is not an unprimeable number, because it can be changed into a prime (947997833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28878 + ... + 52248.

Almost surely, 2^947997873 is an apocalyptic number.

It is an amenable number.

947997873 is a deficient number, since it is larger than the sum of its proper divisors (421694815).

947997873 is a wasteful number, since it uses less digits than its factorization.

947997873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27884 (or 27881 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The square root of 947997873 is about 30789.5740957877. The cubic root of 947997873 is about 982.3564951721.

The spelling of 947997873 in words is "nine hundred forty-seven million, nine hundred ninety-seven thousand, eight hundred seventy-three".