9939625 has 16 divisors (see below), whose sum is σ = 12519936. Its totient is φ = 7878000.

The previous prime is 9939619. The next prime is 9939637. The reversal of 9939625 is 5269399.

It is not a de Polignac number, because 9939625 - 2³ = 9939617 is a prime.

It is a super-2 number, since 2×9939625² = 197592290281250, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 16072 + ... + 16678.

It is an arithmetic number, because the mean of its divisors is an integer number (782496).

Almost surely, 2^9939625 is an apocalyptic number.

It is an amenable number.

9939625 is a deficient number, since it is larger than the sum of its proper divisors (2580311).

9939625 is a wasteful number, since it uses less digits than its factorization.

9939625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 743 counting only the distinct ones).

The product of its digits is 131220, while the sum is 43.

The square root of 9939625 is about 3152.7170821372. The cubic root of 9939625 is about 215.0090135035.

The spelling of 9939625 in words is "nine million, nine hundred thirty-nine thousand, six hundred twenty-five".