998249 has 4 divisors (see below), whose sum is σ = 1140864. Its totient is φ = 855636.

The previous prime is 998243. The next prime is 998273. The reversal of 998249 is 942899.

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 a de Polignac number, because none of the positive numbers 2^k-998249 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998249.

It is not an unprimeable number, because it can be changed into a prime (998243) 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, 71297 + ... + 71310.

It is an arithmetic number, because the mean of its divisors is an integer number (285216).

2⁹⁹⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

998249 is a deficient number, since it is larger than the sum of its proper divisors (142615).

998249 is a wasteful number, since it uses less digits than its factorization.

998249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142614.

The product of its digits is 46656, while the sum is 41.

The square root of 998249 is about 999.1241164140. The cubic root of 998249 is about 99.9415992335.

The spelling of 998249 in words is "nine hundred ninety-eight thousand, two hundred forty-nine".