9641 has 4 divisors (see below), whose sum is σ = 9984. Its totient is φ = 9300.

The previous prime is 9631. The next prime is 9643. The reversal of 9641 is 1469.

9641 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1469 = 13 ⋅113.

It is a de Polignac number, because none of the positive numbers 2^k-9641 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9641.

It is not an unprimeable number, because it can be changed into a prime (9643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 186.

It is an arithmetic number, because the mean of its divisors is an integer number (2496).

2⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

9641 is a deficient number, since it is larger than the sum of its proper divisors (343).

9641 is a wasteful number, since it uses less digits than its factorization.

9641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 216, while the sum is 20.

The square root of 9641 is about 98.1885940423. The cubic root of 9641 is about 21.2833846634.

The spelling of 9641 in words is "nine thousand, six hundred forty-one".