147447 has 16 divisors (see below), whose sum is σ = 225280. Its totient is φ = 95256.

The previous prime is 147419. The next prime is 147449. The reversal of 147447 is 744741.

It is not a de Polignac number, because 147447 - 2⁷ = 147319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147447.

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 147447.

It is not an unprimeable number, because it can be changed into a prime (147449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1098 + ... + 1224.

It is an arithmetic number, because the mean of its divisors is an integer number (14080).

147447 is a Friedman number, since it can be written as (4*4-7)*(4^7-1), using all its digits and the basic arithmetic operations.

2¹⁴⁷⁴⁴⁷ is an apocalyptic number.

147447 is a deficient number, since it is larger than the sum of its proper divisors (77833).

147447 is a wasteful number, since it uses less digits than its factorization.

147447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 147447 is about 383.9882810712. The cubic root of 147447 is about 52.8297611143.

It can be divided in two parts, 1474 and 47, that added together give a square (1521 = 39²).

The spelling of 147447 in words is "one hundred forty-seven thousand, four hundred forty-seven", and thus it is an iban number.