947897 has 4 divisors (see below), whose sum is σ = 953316. Its totient is φ = 942480.

The previous prime is 947893. The next prime is 947911. The reversal of 947897 is 798749.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 606841 = 584^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 947897 - 2² = 947893 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 947897.

It is not an unprimeable number, because it can be changed into a prime (947893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2438 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (238329).

2⁹⁴⁷⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

947897 is a deficient number, since it is larger than the sum of its proper divisors (5419).

947897 is a wasteful number, since it uses less digits than its factorization.

947897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418.

The product of its digits is 127008, while the sum is 44.

The square root of 947897 is about 973.6000205423. The cubic root of 947897 is about 98.2321650944.

The spelling of 947897 in words is "nine hundred forty-seven thousand, eight hundred ninety-seven".