9898722 has 24 divisors (see below), whose sum is σ = 21518640. Its totient is φ = 3288600.

The previous prime is 9898711. The next prime is 9898723. The reversal of 9898722 is 2278989.

It is not an unprimeable number, because it can be changed into a prime (9898723) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6097 + ... + 7547.

It is an arithmetic number, because the mean of its divisors is an integer number (896610).

Almost surely, 2^9898722 is an apocalyptic number.

9898722 is an abundant number, since it is smaller than the sum of its proper divisors (11619918).

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

9898722 is a wasteful number, since it uses less digits than its factorization.

9898722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1835 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 9898722 is about 3146.2234504243. The cubic root of 9898722 is about 214.7136769121.

The spelling of 9898722 in words is "nine million, eight hundred ninety-eight thousand, seven hundred twenty-two".