159433921 has 8 divisors (see below), whose sum is σ = 168624800. Its totient is φ = 150323040.

The previous prime is 159433919. The next prime is 159433957. The reversal of 159433921 is 129334951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159433921 - 2¹ = 159433919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159413921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15876 + ... + 23893.

It is an arithmetic number, because the mean of its divisors is an integer number (21078100).

Almost surely, 2^159433921 is an apocalyptic number.

It is an amenable number.

159433921 is a deficient number, since it is larger than the sum of its proper divisors (9190879).

159433921 is a wasteful number, since it uses less digits than its factorization.

159433921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39999.

The product of its digits is 29160, while the sum is 37.

The square root of 159433921 is about 12626.7145766427. The cubic root of 159433921 is about 542.2425272728.

The spelling of 159433921 in words is "one hundred fifty-nine million, four hundred thirty-three thousand, nine hundred twenty-one".