171029489 has 2 divisors, whose sum is σ = 171029490. Its totient is φ = 171029488.

The previous prime is 171029483. The next prime is 171029513. The reversal of 171029489 is 984920171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151093264 + 19936225 = 12292^2 + 4465^2 .

It is an emirp because it is prime and its reverse (984920171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171029489 - 2⁴ = 171029473 is a prime.

It is a super-2 number, since 2×171029489² = 58502172215202242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171029483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85514744 + 85514745.

It is an arithmetic number, because the mean of its divisors is an integer number (85514745).

Almost surely, 2^171029489 is an apocalyptic number.

It is an amenable number.

171029489 is a deficient number, since it is larger than the sum of its proper divisors (1).

171029489 is an equidigital number, since it uses as much as digits as its factorization.

171029489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 171029489 is about 13077.8243221111. The cubic root of 171029489 is about 555.0818146304.

The spelling of 171029489 in words is "one hundred seventy-one million, twenty-nine thousand, four hundred eighty-nine".