6339221 has 16 divisors (see below), whose sum is σ = 7569408. Its totient is φ = 5194800.

The previous prime is 6339209. The next prime is 6339227. The reversal of 6339221 is 1229336.

It is a cyclic number.

It is not a de Polignac number, because 6339221 - 2¹⁰ = 6338197 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6339227) 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 15 ways as a sum of consecutive naturals, for example, 28316 + ... + 28538.

It is an arithmetic number, because the mean of its divisors is an integer number (473088).

Almost surely, 2^6339221 is an apocalyptic number.

It is an amenable number.

6339221 is a deficient number, since it is larger than the sum of its proper divisors (1230187).

6339221 is a wasteful number, since it uses less digits than its factorization.

6339221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its digits is 1944, while the sum is 26.

The square root of 6339221 is about 2517.7809674394. The cubic root of 6339221 is about 185.0739514429.

The spelling of 6339221 in words is "six million, three hundred thirty-nine thousand, two hundred twenty-one".