9638399 has 4 divisors (see below), whose sum is σ = 9707880. Its totient is φ = 9568920.

The previous prime is 9638393. The next prime is 9638401. The reversal of 9638399 is 9938369.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9638399 - 2⁴ = 9638383 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 (9638393) 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, 34532 + ... + 34809.

It is an arithmetic number, because the mean of its divisors is an integer number (2426970).

Almost surely, 2^9638399 is an apocalyptic number.

9638399 is a deficient number, since it is larger than the sum of its proper divisors (69481).

9638399 is a wasteful number, since it uses less digits than its factorization.

9638399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69480.

The product of its digits is 314928, while the sum is 47.

The square root of 9638399 is about 3104.5771048566. The cubic root of 9638399 is about 212.8147050983.

The spelling of 9638399 in words is "nine million, six hundred thirty-eight thousand, three hundred ninety-nine".