998441 has 4 divisors (see below), whose sum is σ = 1032900. Its totient is φ = 963984.

The previous prime is 998429. The next prime is 998443. The reversal of 998441 is 144899.

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 326041 + 672400 = 571^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 998441 - 2⁶ = 998377 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

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, 17186 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (258225).

2⁹⁹⁸⁴⁴¹ is an apocalyptic number.

It is an amenable number.

998441 is a deficient number, since it is larger than the sum of its proper divisors (34459).

998441 is a wasteful number, since it uses less digits than its factorization.

998441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34458.

The product of its digits is 10368, while the sum is 35.

The square root of 998441 is about 999.2201959528. The cubic root of 998441 is about 99.9480063046.

The spelling of 998441 in words is "nine hundred ninety-eight thousand, four hundred forty-one".