9909641 has 8 divisors (see below), whose sum is σ = 11352000. Its totient is φ = 8473968.

The previous prime is 9909629. The next prime is 9909649. The reversal of 9909641 is 1469099.

9909641 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9909641 - 2¹⁰ = 9908617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9909595 and 9909604.

It is not an unprimeable number, because it can be changed into a prime (9909649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (1419000).

Almost surely, 2^9909641 is an apocalyptic number.

It is an amenable number.

9909641 is a deficient number, since it is larger than the sum of its proper divisors (1442359).

9909641 is a wasteful number, since it uses less digits than its factorization.

9909641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 9909641 is about 3147.9582271688. The cubic root of 9909641 is about 214.7925960942.

The spelling of 9909641 in words is "nine million, nine hundred nine thousand, six hundred forty-one".