998169 has 8 divisors (see below), whose sum is σ = 1373952. Its totient is φ = 643920.

The previous prime is 998167. The next prime is 998197. The reversal of 998169 is 961899.

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

It is not a de Polignac number, because 998169 - 2¹ = 998167 is a prime.

It is a super-3 number, since 3×998169³ = 2983551154633382427, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 998169.

It is not an unprimeable number, because it can be changed into a prime (998161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5274 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (171744).

2⁹⁹⁸¹⁶⁹ is an apocalyptic number.

It is an amenable number.

998169 is a deficient number, since it is larger than the sum of its proper divisors (375783).

998169 is a wasteful number, since it uses less digits than its factorization.

998169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767.

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

The square root of 998169 is about 999.0840805458. The cubic root of 998169 is about 99.9389293781.

The spelling of 998169 in words is "nine hundred ninety-eight thousand, one hundred sixty-nine".