170988089 has 4 divisors (see below), whose sum is σ = 176884260. Its totient is φ = 165091920.

The previous prime is 170988053. The next prime is 170988107. The reversal of 170988089 is 980889071.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123032464 + 47955625 = 11092^2 + 6925^2 .

It is a cyclic number.

It is not a de Polignac number, because 170988089 - 2¹⁶ = 170922553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (170988029) 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 3 ways as a sum of consecutive naturals, for example, 2948042 + ... + 2948099.

It is an arithmetic number, because the mean of its divisors is an integer number (44221065).

Almost surely, 2^170988089 is an apocalyptic number.

It is an amenable number.

170988089 is a deficient number, since it is larger than the sum of its proper divisors (5896171).

170988089 is an equidigital number, since it uses as much as digits as its factorization.

170988089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896170.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 170988089 is about 13076.2413942233. The cubic root of 170988089 is about 555.0370226635.

It can be divided in two parts, 1709 and 88089, that added together give a palindrome (89798).

The spelling of 170988089 in words is "one hundred seventy million, nine hundred eighty-eight thousand, eighty-nine".