147947 has 4 divisors (see below), whose sum is σ = 148896. Its totient is φ = 147000.

The previous prime is 147937. The next prime is 147949. The reversal of 147947 is 749741.

147947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147947 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 147947.

It is not an unprimeable number, because it can be changed into a prime (147949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (37224).

2¹⁴⁷⁹⁴⁷ is an apocalyptic number.

147947 is a deficient number, since it is larger than the sum of its proper divisors (949).

147947 is an equidigital number, since it uses as much as digits as its factorization.

147947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its digits is 7056, while the sum is 32.

The square root of 147947 is about 384.6387915954. The cubic root of 147947 is about 52.8894098438.

The spelling of 147947 in words is "one hundred forty-seven thousand, nine hundred forty-seven".