159444 has 36 divisors (see below), whose sum is σ = 416416. Its totient is φ = 51408.

The previous prime is 159437. The next prime is 159457. The reversal of 159444 is 444951.

It is a tau number, because it is divible by the number of its divisors (36).

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 159444.

It is an unprimeable number.

159444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1497 + ... + 1599.

2¹⁵⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208208).

159444 is an abundant number, since it is smaller than the sum of its proper divisors (256972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159444 is a wasteful number, since it uses less digits than its factorization.

159444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 151 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 159444 is about 399.3043951674. The cubic root of 159444 is about 54.2253953422.

The spelling of 159444 in words is "one hundred fifty-nine thousand, four hundred forty-four".