947081 has 8 divisors (see below), whose sum is σ = 989184. Its totient is φ = 905760.

The previous prime is 947033. The next prime is 947083. The reversal of 947081 is 180749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947081 is a prime.

It is a super-2 number, since 2×947081² = 1793924841122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136 + ... + 4358.

It is an arithmetic number, because the mean of its divisors is an integer number (123648).

2⁹⁴⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

947081 is a deficient number, since it is larger than the sum of its proper divisors (42103).

947081 is a wasteful number, since it uses less digits than its factorization.

947081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 947081 is about 973.1808670540. The cubic root of 947081 is about 98.2039691832.

The spelling of 947081 in words is "nine hundred forty-seven thousand, eighty-one".