6400339 has 8 divisors (see below), whose sum is σ = 7001280. Its totient is φ = 5802600.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400339 is 9330046.

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

It is a cyclic number.

It is not a de Polignac number, because 6400339 - 2¹¹ = 6398291 is a prime.

6400339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6400349) 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, 5772 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (875160).

Almost surely, 2^6400339 is an apocalyptic number.

6400339 is a deficient number, since it is larger than the sum of its proper divisors (600941).

6400339 is a wasteful number, since it uses less digits than its factorization.

6400339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 6400339 is about 2529.8891280054. The cubic root of 6400339 is about 185.6668314087. Note that the first 3 decimals are identical.

The spelling of 6400339 in words is "six million, four hundred thousand, three hundred thirty-nine".