9640444 has 24 divisors (see below), whose sum is σ = 18539136. Its totient is φ = 4350000.

The previous prime is 9640417. The next prime is 9640447. The reversal of 9640444 is 4440469.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5919 + ... + 7369.

It is an arithmetic number, because the mean of its divisors is an integer number (772464).

Almost surely, 2^9640444 is an apocalyptic number.

It is an amenable number.

9640444 is a deficient number, since it is larger than the sum of its proper divisors (8898692).

9640444 is a wasteful number, since it uses less digits than its factorization.

9640444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 9640444 is about 3104.9064398142. The cubic root of 9640444 is about 212.8297551529.

The spelling of 9640444 in words is "nine million, six hundred forty thousand, four hundred forty-four".