9960209 has 8 divisors (see below), whose sum is σ = 11405760. Its totient is φ = 8520336.

The previous prime is 9960187. The next prime is 9960211. The reversal of 9960209 is 9020699.

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 9960209 - 2¹² = 9956113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9960239) 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, 3482 + ... + 5660.

It is an arithmetic number, because the mean of its divisors is an integer number (1425720).

Almost surely, 2^9960209 is an apocalyptic number.

It is an amenable number.

9960209 is a deficient number, since it is larger than the sum of its proper divisors (1445551).

9960209 is a wasteful number, since it uses less digits than its factorization.

9960209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 9960209 is about 3155.9798795303. The cubic root of 9960209 is about 215.1573321087.

The spelling of 9960209 in words is "nine million, nine hundred sixty thousand, two hundred nine".