159872729 has 2 divisors, whose sum is σ = 159872730. Its totient is φ = 159872728.

The previous prime is 159872719. The next prime is 159872771. The reversal of 159872729 is 927278951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114982729 + 44890000 = 10723^2 + 6700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159872729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159872719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79936364 + 79936365.

It is an arithmetic number, because the mean of its divisors is an integer number (79936365).

Almost surely, 2^159872729 is an apocalyptic number.

It is an amenable number.

159872729 is a deficient number, since it is larger than the sum of its proper divisors (1).

159872729 is an equidigital number, since it uses as much as digits as its factorization.

159872729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 159872729 is about 12644.0788118392. The cubic root of 159872729 is about 542.7395407003.

The spelling of 159872729 in words is "one hundred fifty-nine million, eight hundred seventy-two thousand, seven hundred twenty-nine".