8638343 has 4 divisors (see below), whose sum is σ = 9872400. Its totient is φ = 7404288.

The previous prime is 8638339. The next prime is 8638349. The reversal of 8638343 is 3438368.

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 8638343 - 2² = 8638339 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 (8638349) 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, 617018 + ... + 617031.

It is an arithmetic number, because the mean of its divisors is an integer number (2468100).

Almost surely, 2^8638343 is an apocalyptic number.

8638343 is a deficient number, since it is larger than the sum of its proper divisors (1234057).

8638343 is a wasteful number, since it uses less digits than its factorization.

8638343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234056.

The product of its digits is 41472, while the sum is 35.

The square root of 8638343 is about 2939.1058164006. The cubic root of 8638343 is about 205.1839950304.

The spelling of 8638343 in words is "eight million, six hundred thirty-eight thousand, three hundred forty-three".