947394285 has 16 divisors (see below), whose sum is σ = 1516850304. Its totient is φ = 504937152.

The previous prime is 947394281. The next prime is 947394323. The reversal of 947394285 is 582493749.

It is not a de Polignac number, because 947394285 - 2² = 947394281 is a prime.

It is a super-2 number, since 2×947394285² = 1795111862501322450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947394281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2679 + ... + 43611.

It is an arithmetic number, because the mean of its divisors is an integer number (94803144).

Almost surely, 2^947394285 is an apocalyptic number.

It is an amenable number.

947394285 is a deficient number, since it is larger than the sum of its proper divisors (569456019).

947394285 is a wasteful number, since it uses less digits than its factorization.

947394285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42484.

The product of its digits is 2177280, while the sum is 51.

The square root of 947394285 is about 30779.7707106470. The cubic root of 947394285 is about 982.1479628907.

The spelling of 947394285 in words is "nine hundred forty-seven million, three hundred ninety-four thousand, two hundred eighty-five".