6390344 has 16 divisors (see below), whose sum is σ = 12306300. Its totient is φ = 3108672.

The previous prime is 6390337. The next prime is 6390367. The reversal of 6390344 is 4430936.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6100900 + 289444 = 2470^2 + 538^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10499 + ... + 11090.

Almost surely, 2^6390344 is an apocalyptic number.

It is an amenable number.

6390344 is a deficient number, since it is larger than the sum of its proper divisors (5915956).

6390344 is a wasteful number, since it uses less digits than its factorization.

6390344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21632 (or 21628 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 6390344 is about 2527.9129731856. The cubic root of 6390344 is about 185.5701330508.

The spelling of 6390344 in words is "six million, three hundred ninety thousand, three hundred forty-four".