9438643 has 4 divisors (see below), whose sum is σ = 9598680. Its totient is φ = 9278608.

The previous prime is 9438623. The next prime is 9438661. The reversal of 9438643 is 3468349.

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 9438643 - 2²¹ = 7341491 is a prime.

It is an Ulam number.

It is a Duffinian number.

9438643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9438613) 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, 79930 + ... + 80047.

It is an arithmetic number, because the mean of its divisors is an integer number (2399670).

Almost surely, 2^9438643 is an apocalyptic number.

9438643 is a deficient number, since it is larger than the sum of its proper divisors (160037).

9438643 is a wasteful number, since it uses less digits than its factorization.

9438643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160036.

The product of its digits is 62208, while the sum is 37.

The square root of 9438643 is about 3072.2374582704. The cubic root of 9438643 is about 211.3342336492.

The spelling of 9438643 in words is "nine million, four hundred thirty-eight thousand, six hundred forty-three".