6428339 has 8 divisors (see below), whose sum is σ = 6738720. Its totient is φ = 6120576.

The previous prime is 6428311. The next prime is 6428353. The reversal of 6428339 is 9338246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6428339 - 2⁸ = 6428083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6428299 and 6428308.

It is not an unprimeable number, because it can be changed into a prime (6428369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5867 + ... + 6875.

It is an arithmetic number, because the mean of its divisors is an integer number (842340).

Almost surely, 2^6428339 is an apocalyptic number.

6428339 is a deficient number, since it is larger than the sum of its proper divisors (310381).

6428339 is a wasteful number, since it uses less digits than its factorization.

6428339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309.

The product of its digits is 31104, while the sum is 35.

The square root of 6428339 is about 2535.4169282388. The cubic root of 6428339 is about 185.9371873309.

The spelling of 6428339 in words is "six million, four hundred twenty-eight thousand, three hundred thirty-nine".