159997744 has 40 divisors (see below), whose sum is σ = 336259728. Its totient is φ = 73451520.

The previous prime is 159997723. The next prime is 159997753. The reversal of 159997744 is 447799951.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3979 + ... + 18325.

Almost surely, 2^159997744 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 159997744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168129864).

159997744 is an abundant number, since it is smaller than the sum of its proper divisors (176261984).

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

159997744 is a wasteful number, since it uses less digits than its factorization.

159997744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14413 (or 14407 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 55.

The square root of 159997744 is about 12649.0214641292. The cubic root of 159997744 is about 542.8809717544.

The spelling of 159997744 in words is "one hundred fifty-nine million, nine hundred ninety-seven thousand, seven hundred forty-four".