159000444 has 72 divisors (see below), whose sum is σ = 410941440. Its totient is φ = 51825312.

The previous prime is 159000431. The next prime is 159000451. The reversal of 159000444 is 444000951.

It is a super-2 number, since 2×159000444² = 50562282384394272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379267 + ... + 379685.

It is an arithmetic number, because the mean of its divisors is an integer number (5707520).

Almost surely, 2^159000444 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 159000444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205470720).

159000444 is an abundant number, since it is smaller than the sum of its proper divisors (251940996).

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

159000444 is a wasteful number, since it uses less digits than its factorization.

159000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 634 counting only the distinct ones).

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

The square root of 159000444 is about 12609.5378186514. The cubic root of 159000444 is about 541.7506557678.

The spelling of 159000444 in words is "one hundred fifty-nine million, four hundred forty-four", and thus it is an aban number.