998449 has 4 divisors (see below), whose sum is σ = 1005300. Its totient is φ = 991600.

The previous prime is 998443. The next prime is 998471. The reversal of 998449 is 944899.

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 245025 + 753424 = 495^2 + 868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998443) 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, 3202 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (251325).

2⁹⁹⁸⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

998449 is a deficient number, since it is larger than the sum of its proper divisors (6851).

998449 is a wasteful number, since it uses less digits than its factorization.

998449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850.

The product of its digits is 93312, while the sum is 43.

The square root of 998449 is about 999.2241990665. The cubic root of 998449 is about 99.9482732480.

The spelling of 998449 in words is "nine hundred ninety-eight thousand, four hundred forty-nine".