998183 has 4 divisors (see below), whose sum is σ = 1008168. Its totient is φ = 988200.

The previous prime is 998167. The next prime is 998197. The reversal of 998183 is 381899.

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

It is a cyclic number.

It is not a de Polignac number, because 998183 - 2⁴ = 998167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998183.

It is not an unprimeable number, because it can be changed into a prime (998083) 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, 4841 + ... + 5042.

It is an arithmetic number, because the mean of its divisors is an integer number (252042).

2⁹⁹⁸¹⁸³ is an apocalyptic number.

998183 is a deficient number, since it is larger than the sum of its proper divisors (9985).

998183 is a wasteful number, since it uses less digits than its factorization.

998183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9984.

The product of its digits is 15552, while the sum is 38.

The square root of 998183 is about 999.0910869385. The cubic root of 998183 is about 99.9393966130.

The spelling of 998183 in words is "nine hundred ninety-eight thousand, one hundred eighty-three".