9646399 has 4 divisors (see below), whose sum is σ = 11024464. Its totient is φ = 8268336.

The previous prime is 9646397. The next prime is 9646423. The reversal of 9646399 is 9936469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9936469 = 179 ⋅55511.

It is a cyclic number.

It is not a de Polignac number, because 9646399 - 2¹ = 9646397 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 (9646397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689022 + ... + 689035.

It is an arithmetic number, because the mean of its divisors is an integer number (2756116).

Almost surely, 2^9646399 is an apocalyptic number.

9646399 is a deficient number, since it is larger than the sum of its proper divisors (1378065).

9646399 is a wasteful number, since it uses less digits than its factorization.

9646399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378064.

The product of its digits is 314928, while the sum is 46.

The square root of 9646399 is about 3105.8652578629. The cubic root of 9646399 is about 212.8735684987.

The spelling of 9646399 in words is "nine million, six hundred forty-six thousand, three hundred ninety-nine".