6489444 has 48 divisors (see below), whose sum is σ = 17273088. Its totient is φ = 1878528.

The previous prime is 6489433. The next prime is 6489449. The reversal of 6489444 is 4449846.

It is a super-2 number, since 2×6489444² = 84225766858272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (6489449) 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, 1429 + ... + 3875.

It is an arithmetic number, because the mean of its divisors is an integer number (359856).

Almost surely, 2^6489444 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 6489444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8636544).

6489444 is an abundant number, since it is smaller than the sum of its proper divisors (10783644).

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

6489444 is a wasteful number, since it uses less digits than its factorization.

6489444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484 (or 2482 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 6489444 is about 2547.4387136887. The cubic root of 6489444 is about 186.5244764671.

The spelling of 6489444 in words is "six million, four hundred eighty-nine thousand, four hundred forty-four".