147847 has 4 divisors (see below), whose sum is σ = 168976. Its totient is φ = 126720.

The previous prime is 147827. The next prime is 147853. The reversal of 147847 is 748741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748741 = 7 ⋅106963.

It is a cyclic number.

It is not a de Polignac number, because 147847 - 2¹¹ = 145799 is a prime.

It is an Ulam number.

It is a Duffinian 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 147847.

It is not an unprimeable number, because it can be changed into a prime (147827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10554 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (42244).

2¹⁴⁷⁸⁴⁷ is an apocalyptic number.

147847 is a deficient number, since it is larger than the sum of its proper divisors (21129).

147847 is an equidigital number, since it uses as much as digits as its factorization.

147847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21128.

The product of its digits is 6272, while the sum is 31.

The square root of 147847 is about 384.5087775331. The cubic root of 147847 is about 52.8774908614.

The spelling of 147847 in words is "one hundred forty-seven thousand, eight hundred forty-seven".