9839725 has 24 divisors (see below), whose sum is σ = 14195520. Its totient is φ = 6625920.

The previous prime is 9839707. The next prime is 9839749. The reversal of 9839725 is 5279389.

It is a happy number.

9839725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9839725 - 2¹³ = 9831533 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

9839725 is a lucky number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 9849 + ... + 10801.

It is an arithmetic number, because the mean of its divisors is an integer number (591480).

Almost surely, 2^9839725 is an apocalyptic number.

It is an amenable number.

9839725 is a deficient number, since it is larger than the sum of its proper divisors (4355795).

9839725 is a wasteful number, since it uses less digits than its factorization.

9839725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1024 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 9839725 is about 3136.8335945663. The cubic root of 9839725 is about 214.2862576706.

The spelling of 9839725 in words is "nine million, eight hundred thirty-nine thousand, seven hundred twenty-five".