9663389 has 4 divisors (see below), whose sum is σ = 9669660. Its totient is φ = 9657120.

The previous prime is 9663373. The next prime is 9663391. The reversal of 9663389 is 9833669.

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: 9833669 = 47 ⋅209227.

It can be written as a sum of positive squares in 2 ways, for example, as 7198489 + 2464900 = 2683^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 9663389 - 2⁴ = 9663373 is a prime.

It is a super-3 number, since 3×9663389³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9663319) 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, 959 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (2417415).

Almost surely, 2^9663389 is an apocalyptic number.

It is an amenable number.

9663389 is a deficient number, since it is larger than the sum of its proper divisors (6271).

9663389 is a wasteful number, since it uses less digits than its factorization.

9663389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270.

The product of its digits is 209952, while the sum is 44.

The square root of 9663389 is about 3108.5992022131. The cubic root of 9663389 is about 212.9984717796.

The spelling of 9663389 in words is "nine million, six hundred sixty-three thousand, three hundred eighty-nine".