159929409 has 4 divisors (see below), whose sum is σ = 213239216. Its totient is φ = 106619604.

The previous prime is 159929383. The next prime is 159929411. The reversal of 159929409 is 904929951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904929951 = 3 ⋅301643317.

It is not a de Polignac number, because 159929409 - 2⁸ = 159929153 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (159929459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26654899 + ... + 26654904.

It is an arithmetic number, because the mean of its divisors is an integer number (53309804).

Almost surely, 2^159929409 is an apocalyptic number.

It is an amenable number.

159929409 is a deficient number, since it is larger than the sum of its proper divisors (53309807).

159929409 is an equidigital number, since it uses as much as digits as its factorization.

159929409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53309806.

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 159929409 is about 12646.3199785550. The cubic root of 159929409 is about 542.8036726355.

The spelling of 159929409 in words is "one hundred fifty-nine million, nine hundred twenty-nine thousand, four hundred nine".