9998910 has 64 divisors (see below), whose sum is σ = 27604800. Its totient is φ = 2572416.

The previous prime is 9998903. The next prime is 9998929. The reversal of 9998910 is 198999.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 7192 + ... + 8468.

It is an arithmetic number, because the mean of its divisors is an integer number (431325).

Almost surely, 2^9998910 is an apocalyptic number.

9998910 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9998910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13802400).

9998910 is an abundant number, since it is smaller than the sum of its proper divisors (17605890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9998910 is a wasteful number, since it uses less digits than its factorization.

9998910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 9998910 is about 3162.1053113393. The cubic root of 9998910 is about 215.4356409394.

It can be divided in two parts, 99989 and 10, that added together give a palindrome (99999).

The spelling of 9998910 in words is "nine million, nine hundred ninety-eight thousand, nine hundred ten".