9885644 has 12 divisors (see below), whose sum is σ = 17367504. Its totient is φ = 4923504.

The previous prime is 9885637. The next prime is 9885647. The reversal of 9885644 is 4465889.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9885595 and 9885604.

It is not an unprimeable number, because it can be changed into a prime (9885647) 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, 3647 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (1447292).

Almost surely, 2^9885644 is an apocalyptic number.

It is an amenable number.

9885644 is a deficient number, since it is larger than the sum of its proper divisors (7481860).

9885644 is a wasteful number, since it uses less digits than its factorization.

9885644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664 (or 9662 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 9885644 is about 3144.1443987196. The cubic root of 9885644 is about 214.6190767199.

The spelling of 9885644 in words is "nine million, eight hundred eighty-five thousand, six hundred forty-four".