998244805 has 4 divisors (see below), whose sum is σ = 1197893772. Its totient is φ = 798595840.

The previous prime is 998244803. The next prime is 998244839. The reversal of 998244805 is 508442899.

998244805 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 445336609 + 552908196 = 21103^2 + 23514^2 .

It is not a de Polignac number, because 998244805 - 2¹ = 998244803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998244803) 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, 99824476 + ... + 99824485.

It is an arithmetic number, because the mean of its divisors is an integer number (299473443).

Almost surely, 2^998244805 is an apocalyptic number.

It is an amenable number.

998244805 is a deficient number, since it is larger than the sum of its proper divisors (199648967).

998244805 is a wasteful number, since it uses less digits than its factorization.

998244805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199648966.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 998244805 is about 31595.0123437229. The cubic root of 998244805 is about 999.4145923648.

The spelling of 998244805 in words is "nine hundred ninety-eight million, two hundred forty-four thousand, eight hundred five".