9998911 has 4 divisors (see below), whose sum is σ = 10768072. Its totient is φ = 9229752.

The previous prime is 9998903. The next prime is 9998929. The reversal of 9998911 is 1198999.

9998911 is digitally balanced in base 2, 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 is a cyclic number.

It is not a de Polignac number, because 9998911 - 2³ = 9998903 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 (9998971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384561 + ... + 384586.

It is an arithmetic number, because the mean of its divisors is an integer number (2692018).

Almost surely, 2^9998911 is an apocalyptic number.

9998911 is a deficient number, since it is larger than the sum of its proper divisors (769161).

9998911 is a wasteful number, since it uses less digits than its factorization.

9998911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769160.

The product of its digits is 52488, while the sum is 46.

The square root of 9998911 is about 3162.1054694618. The cubic root of 9998911 is about 215.4356481214.

It can be divided in two parts, 99989 and 11, that added together give a 5-th power (100000 = 10⁵).

The spelling of 9998911 in words is "nine million, nine hundred ninety-eight thousand, nine hundred eleven".