998812816 has 15 divisors (see below), whose sum is σ = 1935444793. Its totient is φ = 499343200.

The previous prime is 998812813. The next prime is 998812831. The reversal of 998812816 is 618218899.

The square root of 998812816 is 31604.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 686230416 + 312582400 = 26196^2 + 17680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998812811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 122466 + ... + 130366.

Almost surely, 2^998812816 is an apocalyptic number.

998812816 is the 31604-th square number.

It is an amenable number.

998812816 is a deficient number, since it is larger than the sum of its proper divisors (936631977).

998812816 is an frugal number, since it uses more digits than its factorization.

998812816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810 (or 7903 counting only the distinct ones).

The product of its digits is 497664, while the sum is 52.

The cubic root of 998812816 is about 999.6041152960.

The spelling of 998812816 in words is "nine hundred ninety-eight million, eight hundred twelve thousand, eight hundred sixteen".