998824805 has 64 divisors (see below), whose sum is σ = 1412038656. Its totient is φ = 671328000.

The previous prime is 998824793. The next prime is 998824831. The reversal of 998824805 is 508428899.

It is not a de Polignac number, because 998824805 - 2⁸ = 998824549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4478924 + ... + 4479146.

It is an arithmetic number, because the mean of its divisors is an integer number (22063104).

Almost surely, 2^998824805 is an apocalyptic number.

It is an amenable number.

998824805 is a deficient number, since it is larger than the sum of its proper divisors (413213851).

998824805 is a wasteful number, since it uses less digits than its factorization.

998824805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The square root of 998824805 is about 31604.1896747884. The cubic root of 998824805 is about 999.6081147794.

The spelling of 998824805 in words is "nine hundred ninety-eight million, eight hundred twenty-four thousand, eight hundred five".