6439422 has 32 divisors (see below), whose sum is σ = 14382720. Its totient is φ = 1905120.

The previous prime is 6439397. The next prime is 6439427. The reversal of 6439422 is 2249346.

6439422 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 6439422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6439427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704 + ... + 3972.

It is an arithmetic number, because the mean of its divisors is an integer number (449460).

Almost surely, 2^6439422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6439422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7191360).

6439422 is an abundant number, since it is smaller than the sum of its proper divisors (7943298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6439422 is a wasteful number, since it uses less digits than its factorization.

6439422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its digits is 10368, while the sum is 30.

The square root of 6439422 is about 2537.6016235808. The cubic root of 6439422 is about 186.0439831238.

The spelling of 6439422 in words is "six million, four hundred thirty-nine thousand, four hundred twenty-two".