9965239 has 2 divisors, whose sum is σ = 9965240. Its totient is φ = 9965238.

The previous prime is 9965227. The next prime is 9965257. The reversal of 9965239 is 9325699.

9965239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9965239 - 2¹³ = 9957047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9965195 and 9965204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9965339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982619 + 4982620.

It is an arithmetic number, because the mean of its divisors is an integer number (4982620).

Almost surely, 2^9965239 is an apocalyptic number.

9965239 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965239 is an equidigital number, since it uses as much as digits as its factorization.

9965239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 43.

The square root of 9965239 is about 3156.7766788292. The cubic root of 9965239 is about 215.1935448444.

The spelling of 9965239 in words is "nine million, nine hundred sixty-five thousand, two hundred thirty-nine".