9998456 has 32 divisors (see below), whose sum is σ = 20375040. Its totient is φ = 4572288.

The previous prime is 9998447. The next prime is 9998459. The reversal of 9998456 is 6548999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12830 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (636720).

Almost surely, 2^9998456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9998456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10187520).

9998456 is an abundant number, since it is smaller than the sum of its proper divisors (10376584).

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

9998456 is a wasteful number, since it uses less digits than its factorization.

9998456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 899 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 9998456 is about 3162.0335229090. The cubic root of 9998456 is about 215.4323802753.

The spelling of 9998456 in words is "nine million, nine hundred ninety-eight thousand, four hundred fifty-six".