47847 has 8 divisors (see below), whose sum is σ = 65520. Its totient is φ = 31040.

The previous prime is 47843. The next prime is 47857. The reversal of 47847 is 74874.

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

It is a cyclic number.

It is not a de Polignac number, because 47847 - 2² = 47843 is a prime.

47847 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47847.

It is not an unprimeable number, because it can be changed into a prime (47843) 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, 72 + ... + 317.

It is an arithmetic number, because the mean of its divisors is an integer number (8190).

2⁴⁷⁸⁴⁷ is an apocalyptic number.

47847 is a deficient number, since it is larger than the sum of its proper divisors (17673).

47847 is a wasteful number, since it uses less digits than its factorization.

47847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 6272, while the sum is 30.

The square root of 47847 is about 218.7395711800. The cubic root of 47847 is about 36.3037569441.

It can be divided in two parts, 478 and 47, that added together give a palindrome (525).

The spelling of 47847 in words is "forty-seven thousand, eight hundred forty-seven".