9898825 has 6 divisors (see below), whose sum is σ = 12274574. Its totient is φ = 7919040.

The previous prime is 9898807. The next prime is 9898841. The reversal of 9898825 is 5288989.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 89401 + 9809424 = 299^2 + 3132^2 .

It is not a de Polignac number, because 9898825 - 2⁵ = 9898793 is a prime.

It is a Duffinian number.

9898825 is a lucky 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 5 ways as a sum of consecutive naturals, for example, 197952 + ... + 198001.

Almost surely, 2^9898825 is an apocalyptic number.

It is an amenable number.

9898825 is a deficient number, since it is larger than the sum of its proper divisors (2375749).

9898825 is a wasteful number, since it uses less digits than its factorization.

9898825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395963 (or 395958 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The square root of 9898825 is about 3146.2398192128. The cubic root of 9898825 is about 214.7144216356.

The spelling of 9898825 in words is "nine million, eight hundred ninety-eight thousand, eight hundred twenty-five".