9840625 has 24 divisors (see below), whose sum is σ = 12749184. Its totient is φ = 7590000.

The previous prime is 9840617. The next prime is 9840643. The reversal of 9840625 is 5260489.

It is a happy number.

It is not a de Polignac number, because 9840625 - 2³ = 9840617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146842 + ... + 146908.

It is an arithmetic number, because the mean of its divisors is an integer number (531216).

Almost surely, 2^9840625 is an apocalyptic number.

It is an amenable number.

9840625 is a deficient number, since it is larger than the sum of its proper divisors (2908559).

9840625 is an frugal number, since it uses more digits than its factorization.

9840625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 9840625 is about 3136.9770480512. The cubic root of 9840625 is about 214.2927907716.

The spelling of 9840625 in words is "nine million, eight hundred forty thousand, six hundred twenty-five".