9925986 has 16 divisors (see below), whose sum is σ = 22688064. Its totient is φ = 2835984.

The previous prime is 9925973. The next prime is 9925987. The reversal of 9925986 is 6895299.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9925987) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 118125 + ... + 118208.

It is an arithmetic number, because the mean of its divisors is an integer number (1418004).

Almost surely, 2^9925986 is an apocalyptic number.

9925986 is an abundant number, since it is smaller than the sum of its proper divisors (12762078).

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

9925986 is a wasteful number, since it uses less digits than its factorization.

9925986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236345.

The product of its digits is 349920, while the sum is 48.

The square root of 9925986 is about 3150.5532847422. The cubic root of 9925986 is about 214.9106244706.

The spelling of 9925986 in words is "nine million, nine hundred twenty-five thousand, nine hundred eighty-six".