9724381 has 4 divisors (see below), whose sum is σ = 9820764. Its totient is φ = 9628000.

The previous prime is 9724349. The next prime is 9724411. The reversal of 9724381 is 1834279.

9724381 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 7371225 + 2353156 = 2715^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 9724381 - 2⁵ = 9724349 is a prime.

It is a super-2 number, since 2×9724381² = 189127171666322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9704381) 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, 48040 + ... + 48241.

It is an arithmetic number, because the mean of its divisors is an integer number (2455191).

Almost surely, 2^9724381 is an apocalyptic number.

It is an amenable number.

9724381 is a deficient number, since it is larger than the sum of its proper divisors (96383).

9724381 is a wasteful number, since it uses less digits than its factorization.

9724381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96382.

The product of its digits is 12096, while the sum is 34.

The square root of 9724381 is about 3118.3939776750. The cubic root of 9724381 is about 213.4456567241.

The spelling of 9724381 in words is "nine million, seven hundred twenty-four thousand, three hundred eighty-one".