947994873 has 32 divisors (see below), whose sum is σ = 1531622400. Its totient is φ = 509478336.

The previous prime is 947994869. The next prime is 947994881. The reversal of 947994873 is 378499749.

It is a happy number.

It is not a de Polignac number, because 947994873 - 2² = 947994869 is a prime.

It is a super-2 number, since 2×947994873² = 1797388558468572258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (947994673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46915 + ... + 64007.

It is an arithmetic number, because the mean of its divisors is an integer number (47863200).

Almost surely, 2^947994873 is an apocalyptic number.

It is an amenable number.

947994873 is a deficient number, since it is larger than the sum of its proper divisors (583627527).

947994873 is a wasteful number, since it uses less digits than its factorization.

947994873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17261.

The product of its digits is 13716864, while the sum is 60.

The square root of 947994873 is about 30789.5253779593. The cubic root of 947994873 is about 982.3554589277.

The spelling of 947994873 in words is "nine hundred forty-seven million, nine hundred ninety-four thousand, eight hundred seventy-three".