159804440 has 64 divisors (see below), whose sum is σ = 380332800. Its totient is φ = 60262272.

The previous prime is 159804433. The next prime is 159804461. The reversal of 159804440 is 44408951.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 159804440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214709 + ... + 215451.

It is an arithmetic number, because the mean of its divisors is an integer number (5942700).

Almost surely, 2^159804440 is an apocalyptic number.

159804440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159804440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190166400).

159804440 is an abundant number, since it is smaller than the sum of its proper divisors (220528360).

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

159804440 is a wasteful number, since it uses less digits than its factorization.

159804440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 159804440 is about 12641.3780894331. The cubic root of 159804440 is about 542.6622533499.

The spelling of 159804440 in words is "one hundred fifty-nine million, eight hundred four thousand, four hundred forty".