6256439 has 4 divisors (see below), whose sum is σ = 7150224. Its totient is φ = 5362656.

The previous prime is 6256427. The next prime is 6256469. The reversal of 6256439 is 9346526.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6256439 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 2³ + 5⁷ + 6⁷ + 4¹⁰ + 3¹⁴ + 9⁵ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6256399 and 6256408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6256409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446882 + ... + 446895.

It is an arithmetic number, because the mean of its divisors is an integer number (1787556).

Almost surely, 2^6256439 is an apocalyptic number.

6256439 is a deficient number, since it is larger than the sum of its proper divisors (893785).

6256439 is an equidigital number, since it uses as much as digits as its factorization.

6256439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893784.

The product of its digits is 38880, while the sum is 35.

The square root of 6256439 is about 2501.2874684850. The cubic root of 6256439 is about 184.2648104979.

The spelling of 6256439 in words is "six million, two hundred fifty-six thousand, four hundred thirty-nine".