6439132 has 48 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 2620800.

The previous prime is 6439127. The next prime is 6439133. The reversal of 6439132 is 2319346.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 6439132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6439133) 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, 81469 + ... + 81547.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^6439132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6439132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6773760).

6439132 is an abundant number, since it is smaller than the sum of its proper divisors (7108388).

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

6439132 is a wasteful number, since it uses less digits than its factorization.

6439132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 200 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 6439132 is about 2537.5444823687. The cubic root of 6439132 is about 186.0411902456.

It can be divided in two parts, 6439 and 132, that multiplied together give a palindrome (849948).

The spelling of 6439132 in words is "six million, four hundred thirty-nine thousand, one hundred thirty-two".