998844443 has 4 divisors (see below), whose sum is σ = 998938080. Its totient is φ = 998750808.

The previous prime is 998844433. The next prime is 998844487. The reversal of 998844443 is 344448899.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 344448899 = 9091 ⋅37889.

It is a cyclic number.

It is not a de Polignac number, because 998844443 - 2¹² = 998840347 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 (998844433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28403 + ... + 52956.

It is an arithmetic number, because the mean of its divisors is an integer number (249734520).

Almost surely, 2^998844443 is an apocalyptic number.

998844443 is a deficient number, since it is larger than the sum of its proper divisors (93637).

998844443 is a wasteful number, since it uses less digits than its factorization.

998844443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93636.

The product of its digits is 3981312, while the sum is 53.

The square root of 998844443 is about 31604.5003599171. The cubic root of 998844443 is about 999.6146658700.

The spelling of 998844443 in words is "nine hundred ninety-eight million, eight hundred forty-four thousand, four hundred forty-three".