6386739 has 8 divisors (see below), whose sum is σ = 8528832. Its totient is φ = 4251240.

The previous prime is 6386719. The next prime is 6386749. The reversal of 6386739 is 9376836.

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

It is not a de Polignac number, because 6386739 - 2⁸ = 6386483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6386739.

It is not an unprimeable number, because it can be changed into a prime (6386719) 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, 1444 + ... + 3854.

It is an arithmetic number, because the mean of its divisors is an integer number (1066104).

Almost surely, 2^6386739 is an apocalyptic number.

6386739 is a deficient number, since it is larger than the sum of its proper divisors (2142093).

6386739 is a wasteful number, since it uses less digits than its factorization.

6386739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297.

The product of its digits is 163296, while the sum is 42.

The square root of 6386739 is about 2527.1998338082. The cubic root of 6386739 is about 185.5352311129.

The spelling of 6386739 in words is "six million, three hundred eighty-six thousand, seven hundred thirty-nine".