9965321 has 4 divisors (see below), whose sum is σ = 10234692. Its totient is φ = 9695952.

The previous prime is 9965311. The next prime is 9965339. The reversal of 9965321 is 1235699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1235699 = 41 ⋅30139.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 5470921 = 2120^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 9965321 - 2⁶ = 9965257 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9965311) 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, 134630 + ... + 134703.

It is an arithmetic number, because the mean of its divisors is an integer number (2558673).

Almost surely, 2^9965321 is an apocalyptic number.

It is an amenable number.

9965321 is a deficient number, since it is larger than the sum of its proper divisors (269371).

9965321 is a wasteful number, since it uses less digits than its factorization.

9965321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269370.

The product of its digits is 14580, while the sum is 35.

The square root of 9965321 is about 3156.7896667342. The cubic root of 9965321 is about 215.1941350903.

The spelling of 9965321 in words is "nine million, nine hundred sixty-five thousand, three hundred twenty-one".