6423439 has 8 divisors (see below), whose sum is σ = 7034832. Its totient is φ = 5816640.

The previous prime is 6423427. The next prime is 6423449. The reversal of 6423439 is 9343246.

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

It is a cyclic number.

It is not a de Polignac number, because 6423439 - 2⁵ = 6423407 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4⁸ + 2²¹ + 3³ + 4¹¹ + 3⁹ + 9² .

It is a Duffinian number.

6423439 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6423439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6423449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2227 + ... + 4219.

It is an arithmetic number, because the mean of its divisors is an integer number (879354).

Almost surely, 2^6423439 is an apocalyptic number.

6423439 is a deficient number, since it is larger than the sum of its proper divisors (611393).

6423439 is a wasteful number, since it uses less digits than its factorization.

6423439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297.

The product of its digits is 15552, while the sum is 31.

The square root of 6423439 is about 2534.4504335260. The cubic root of 6423439 is about 185.8899317952.

The spelling of 6423439 in words is "six million, four hundred twenty-three thousand, four hundred thirty-nine".