171098459 has 4 divisors (see below), whose sum is σ = 195541104. Its totient is φ = 146655816.

The previous prime is 171098429. The next prime is 171098491. The reversal of 171098459 is 954890171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954890171 = 157 ⋅6082103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171098459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171098429) 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 3 ways as a sum of consecutive naturals, for example, 12221312 + ... + 12221325.

It is an arithmetic number, because the mean of its divisors is an integer number (48885276).

Almost surely, 2^171098459 is an apocalyptic number.

171098459 is a deficient number, since it is larger than the sum of its proper divisors (24442645).

171098459 is an equidigital number, since it uses as much as digits as its factorization.

171098459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24442644.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 171098459 is about 13080.4609628254. The cubic root of 171098459 is about 555.1564194016.

The spelling of 171098459 in words is "one hundred seventy-one million, ninety-eight thousand, four hundred fifty-nine".