171139229 has 8 divisors (see below), whose sum is σ = 173715000. Its totient is φ = 168569856.

The previous prime is 171139223. The next prime is 171139253. The reversal of 171139229 is 922931171.

It can be written as a sum of positive squares in 4 ways, for example, as 31663129 + 139476100 = 5627^2 + 11810^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171139229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171139223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90239 + ... + 92115.

It is an arithmetic number, because the mean of its divisors is an integer number (21714375).

Almost surely, 2^171139229 is an apocalyptic number.

It is an amenable number.

171139229 is a deficient number, since it is larger than the sum of its proper divisors (2575771).

171139229 is a wasteful number, since it uses less digits than its factorization.

171139229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199.

The product of its digits is 6804, while the sum is 35.

The square root of 171139229 is about 13082.0193013158. The cubic root of 171139229 is about 555.2005108366.

The spelling of 171139229 in words is "one hundred seventy-one million, one hundred thirty-nine thousand, two hundred twenty-nine".