6399229 has 4 divisors (see below), whose sum is σ = 6441760. Its totient is φ = 6356700.

The previous prime is 6399209. The next prime is 6399251. The reversal of 6399229 is 9229936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6399229 - 2¹⁵ = 6366461 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6399191 and 6399200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6399209) 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, 21039 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (1610440).

Almost surely, 2^6399229 is an apocalyptic number.

It is an amenable number.

6399229 is a deficient number, since it is larger than the sum of its proper divisors (42531).

6399229 is a wasteful number, since it uses less digits than its factorization.

6399229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42530.

The product of its digits is 52488, while the sum is 40.

The square root of 6399229 is about 2529.6697412904. The cubic root of 6399229 is about 185.6560974930.

The spelling of 6399229 in words is "six million, three hundred ninety-nine thousand, two hundred twenty-nine".