9724889 has 4 divisors (see below), whose sum is σ = 10060260. Its totient is φ = 9389520.

The previous prime is 9724879. The next prime is 9724919. The reversal of 9724889 is 9884279.

9724889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8265625 + 1459264 = 2875^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 9724889 - 2⁴ = 9724873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9724859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167642 + ... + 167699.

It is an arithmetic number, because the mean of its divisors is an integer number (2515065).

Almost surely, 2^9724889 is an apocalyptic number.

It is an amenable number.

9724889 is a deficient number, since it is larger than the sum of its proper divisors (335371).

9724889 is a wasteful number, since it uses less digits than its factorization.

9724889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335370.

The product of its digits is 290304, while the sum is 47.

The square root of 9724889 is about 3118.4754287953. The cubic root of 9724889 is about 213.4493734476.

The spelling of 9724889 in words is "nine million, seven hundred twenty-four thousand, eight hundred eighty-nine".