159447 has 4 divisors (see below), whose sum is σ = 212600. Its totient is φ = 106296.

The previous prime is 159437. The next prime is 159457. The reversal of 159447 is 744951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744951 = 3 ⋅248317.

It is an interprime number because it is at equal distance from previous prime (159437) and next prime (159457).

It is not a de Polignac number, because 159447 - 2⁴ = 159431 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159407) 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, 26572 + ... + 26577.

It is an arithmetic number, because the mean of its divisors is an integer number (53150).

2¹⁵⁹⁴⁴⁷ is an apocalyptic number.

159447 is a deficient number, since it is larger than the sum of its proper divisors (53153).

159447 is an equidigital number, since it uses as much as digits as its factorization.

159447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53152.

The product of its digits is 5040, while the sum is 30.

The square root of 159447 is about 399.3081516824. The cubic root of 159447 is about 54.2257354306.

It can be divided in two parts, 15944 and 7, that added together give a palindrome (15951).

The spelling of 159447 in words is "one hundred fifty-nine thousand, four hundred forty-seven".