998844445 has 4 divisors (see below), whose sum is σ = 1198613340. Its totient is φ = 799075552.

The previous prime is 998844433. The next prime is 998844487. The reversal of 998844445 is 544448899.

It is a happy number.

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 516471076 + 482373369 = 22726^2 + 21963^2 .

It is a cyclic number.

It is not a de Polignac number, because 998844445 - 2²⁷ = 864626717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99884440 + ... + 99884449.

It is an arithmetic number, because the mean of its divisors is an integer number (299653335).

Almost surely, 2^998844445 is an apocalyptic number.

It is an amenable number.

998844445 is a deficient number, since it is larger than the sum of its proper divisors (199768895).

998844445 is a wasteful number, since it uses less digits than its factorization.

998844445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199768894.

The product of its digits is 6635520, while the sum is 55.

The square root of 998844445 is about 31604.5003915582. The cubic root of 998844445 is about 999.6146665372.

It can be divided in two parts, 99884 and 4445, that added together give a square (104329 = 323²).

The spelling of 998844445 in words is "nine hundred ninety-eight million, eight hundred forty-four thousand, four hundred forty-five".