6309385 has 16 divisors (see below), whose sum is σ = 7989840. Its totient is φ = 4775680.

The previous prime is 6309377. The next prime is 6309389. The reversal of 6309385 is 5839036.

It can be written as a sum of positive squares in 8 ways, for example, as 24336 + 6285049 = 156^2 + 2507^2 .

It is not a de Polignac number, because 6309385 - 2³ = 6309377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6309385.

It is not an unprimeable number, because it can be changed into a prime (6309389) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7275 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (499365).

Almost surely, 2^6309385 is an apocalyptic number.

It is an amenable number.

6309385 is a deficient number, since it is larger than the sum of its proper divisors (1680455).

6309385 is a wasteful number, since it uses less digits than its factorization.

6309385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 6309385 is about 2511.8489206160. The cubic root of 6309385 is about 184.7831400978.

The spelling of 6309385 in words is "six million, three hundred nine thousand, three hundred eighty-five".