171038729 has 8 divisors (see below), whose sum is σ = 172134720. Its totient is φ = 169946896.

The previous prime is 171038719. The next prime is 171038759. The reversal of 171038729 is 927830171.

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 171038729 - 2¹⁶ = 170973193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171038692 and 171038701.

It is not an unprimeable number, because it can be changed into a prime (171038719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123887 + ... + 125259.

It is an arithmetic number, because the mean of its divisors is an integer number (21516840).

Almost surely, 2^171038729 is an apocalyptic number.

It is an amenable number.

171038729 is a deficient number, since it is larger than the sum of its proper divisors (1095991).

171038729 is a wasteful number, since it uses less digits than its factorization.

171038729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 171038729 is about 13078.1775871105. The cubic root of 171038729 is about 555.0918106913.

The spelling of 171038729 in words is "one hundred seventy-one million, thirty-eight thousand, seven hundred twenty-nine".