6438343 has 2 divisors, whose sum is σ = 6438344. Its totient is φ = 6438342.

The previous prime is 6438331. The next prime is 6438361. The reversal of 6438343 is 3438346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6438343 - 2²¹ = 4341191 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 4⁶ + 3³ + 8⁵ + 3¹³ + 4⁷ + 3¹⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6438373) 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 as a sum of consecutive naturals, namely, 3219171 + 3219172.

It is an arithmetic number, because the mean of its divisors is an integer number (3219172).

Almost surely, 2^6438343 is an apocalyptic number.

6438343 is a deficient number, since it is larger than the sum of its proper divisors (1).

6438343 is an equidigital number, since it uses as much as digits as its factorization.

6438343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 6438343 is about 2537.3890123511. The cubic root of 6438343 is about 186.0335912661.

The spelling of 6438343 in words is "six million, four hundred thirty-eight thousand, three hundred forty-three".