9898724 has 24 divisors (see below), whose sum is σ = 18979968. Its totient is φ = 4479840.

The previous prime is 9898723. The next prime is 9898769. The reversal of 9898724 is 4278989.

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 7 ways as a sum of consecutive naturals, for example, 15842 + ... + 16454.

It is an arithmetic number, because the mean of its divisors is an integer number (790832).

Almost surely, 2^9898724 is an apocalyptic number.

It is an amenable number.

9898724 is a deficient number, since it is larger than the sum of its proper divisors (9081244).

9898724 is a wasteful number, since it uses less digits than its factorization.

9898724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 993 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 9898724 is about 3146.2237682657. The cubic root of 9898724 is about 214.7136913728.

The spelling of 9898724 in words is "nine million, eight hundred ninety-eight thousand, seven hundred twenty-four".