9998810 has 16 divisors (see below), whose sum is σ = 18245736. Its totient is φ = 3944448.

The previous prime is 9998809. The next prime is 9998851. The reversal of 9998810 is 188999.

It can be written as a sum of positive squares in 4 ways, for example, as 5414929 + 4583881 = 2327^2 + 2141^2 .

It is a super-2 number, since 2×9998810² = 199952402832200, which contains 22 as substring.

It is a nialpdrome in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6119 + ... + 7578.

Almost surely, 2^9998810 is an apocalyptic number.

9998810 is a deficient number, since it is larger than the sum of its proper divisors (8246926).

9998810 is a wasteful number, since it uses less digits than its factorization.

9998810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13777.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 9998810 is about 3162.0894990496. The cubic root of 9998810 is about 215.4349227399.

The spelling of 9998810 in words is "nine million, nine hundred ninety-eight thousand, eight hundred ten".