989169 has 4 divisors (see below), whose sum is σ = 1318896. Its totient is φ = 659444.

The previous prime is 989123. The next prime is 989171. The reversal of 989169 is 961989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 989169 - 2¹⁵ = 956401 is a prime.

It is a super-2 number, since 2×989169² = 1956910621122, which contains 22 as substring.

It is a D-number.

989169 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 989169.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989169.

It is not an unprimeable number, because it can be changed into a prime (989119) 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, 164859 + ... + 164864.

It is an arithmetic number, because the mean of its divisors is an integer number (329724).

2⁹⁸⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

989169 is a deficient number, since it is larger than the sum of its proper divisors (329727).

989169 is a wasteful number, since it uses less digits than its factorization.

989169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329726.

The product of its digits is 34992, while the sum is 42.

The square root of 989169 is about 994.5697562263. The cubic root of 989169 is about 99.6376553158.

The spelling of 989169 in words is "nine hundred eighty-nine thousand, one hundred sixty-nine".