159944869 has 12 divisors (see below), whose sum is σ = 195852000. Its totient is φ = 129879288.

The previous prime is 159944861. The next prime is 159944887. The reversal of 159944869 is 968449951.

It is not a de Polignac number, because 159944869 - 2³ = 159944861 is a prime.

It is a super-2 number, since 2×159944869² = 51164722238854322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159944861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84969 + ... + 86830.

It is an arithmetic number, because the mean of its divisors is an integer number (16321000).

Almost surely, 2^159944869 is an apocalyptic number.

159944869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

159944869 is a deficient number, since it is larger than the sum of its proper divisors (35907131).

159944869 is a wasteful number, since it uses less digits than its factorization.

159944869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171832 (or 171825 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 55.

The square root of 159944869 is about 12646.9312087953. The cubic root of 159944869 is about 542.8211625902.

The spelling of 159944869 in words is "one hundred fifty-nine million, nine hundred forty-four thousand, eight hundred sixty-nine".