9998811 has 6 divisors (see below), whose sum is σ = 14442740. Its totient is φ = 6665868.

The previous prime is 9998809. The next prime is 9998851. The reversal of 9998811 is 1188999.

9998811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9998811 - 2¹ = 9998809 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9998801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555481 + ... + 555498.

Almost surely, 2^9998811 is an apocalyptic number.

9998811 is a deficient number, since it is larger than the sum of its proper divisors (4443929).

9998811 is a wasteful number, since it uses less digits than its factorization.

9998811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110985 (or 1110982 counting only the distinct ones).

The product of its digits is 46656, while the sum is 45.

The square root of 9998811 is about 3162.0896571729. The cubic root of 9998811 is about 215.4349299219.

It can be divided in two parts, 99988 and 11, that added together give a palindrome (99999).

The spelling of 9998811 in words is "nine million, nine hundred ninety-eight thousand, eight hundred eleven".