9725849 has 16 divisors (see below), whose sum is σ = 11695872. Its totient is φ = 7907328.

The previous prime is 9725839. The next prime is 9725873. The reversal of 9725849 is 9485279.

It is a happy number.

9725849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9725849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9725809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30917 + ... + 31229.

It is an arithmetic number, because the mean of its divisors is an integer number (730992).

Almost surely, 2^9725849 is an apocalyptic number.

It is an amenable number.

9725849 is a deficient number, since it is larger than the sum of its proper divisors (1970023).

9725849 is a wasteful number, since it uses less digits than its factorization.

9725849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536.

The product of its digits is 181440, while the sum is 44.

The square root of 9725849 is about 3118.6293463636. The cubic root of 9725849 is about 213.4563968236.

The spelling of 9725849 in words is "nine million, seven hundred twenty-five thousand, eight hundred forty-nine".