6378959 has 4 divisors (see below), whose sum is σ = 6466416. Its totient is φ = 6291504.

The previous prime is 6378947. The next prime is 6378973. The reversal of 6378959 is 9598736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6378959 - 2⁸ = 6378703 is a prime.

It is a super-2 number, since 2×6378959² = 81382235847362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378919) 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, 43619 + ... + 43764.

It is an arithmetic number, because the mean of its divisors is an integer number (1616604).

Almost surely, 2^6378959 is an apocalyptic number.

6378959 is a deficient number, since it is larger than the sum of its proper divisors (87457).

6378959 is an equidigital number, since it uses as much as digits as its factorization.

6378959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87456.

The product of its digits is 408240, while the sum is 47.

The square root of 6378959 is about 2525.6601117332. The cubic root of 6378959 is about 185.4598639804.

It can be divided in two parts, 6378 and 959, that added together give a palindrome (7337).

The spelling of 6378959 in words is "six million, three hundred seventy-eight thousand, nine hundred fifty-nine".