9644 has 6 divisors (see below), whose sum is σ = 16884. Its totient is φ = 4820.

The previous prime is 9643. The next prime is 9649. The reversal of 9644 is 4469.

9644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15 and base 16.

It is a nialpdrome in base 10.

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 a polite number, since it can be written as a sum of consecutive naturals, namely, 1202 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (2814).

2⁹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

9644 is a deficient number, since it is larger than the sum of its proper divisors (7240).

9644 is a wasteful number, since it uses less digits than its factorization.

9644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415 (or 2413 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 9644 is about 98.2038695775. The cubic root of 9644 is about 21.2855920254.

It can be divided in two parts, 96 and 44, that multiplied together give a palindrome (4224).

The spelling of 9644 in words is "nine thousand, six hundred forty-four".