9659399 has 4 divisors (see below), whose sum is σ = 9668760. Its totient is φ = 9650040.

The previous prime is 9659389. The next prime is 9659423. The reversal of 9659399 is 9939569.

9659399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9939569 = 37 ⋅268637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9659399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9659339) 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, 2909 + ... + 5270.

It is an arithmetic number, because the mean of its divisors is an integer number (2417190).

Almost surely, 2^9659399 is an apocalyptic number.

9659399 is a deficient number, since it is larger than the sum of its proper divisors (9361).

9659399 is a wasteful number, since it uses less digits than its factorization.

9659399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360.

The product of its digits is 590490, while the sum is 50.

The square root of 9659399 is about 3107.9573677900. The cubic root of 9659399 is about 212.9691521521.

It can be divided in two parts, 96 and 59399, that added together give a palindrome (59495).

The spelling of 9659399 in words is "nine million, six hundred fifty-nine thousand, three hundred ninety-nine".