8445444 has 72 divisors (see below), whose sum is σ = 23442048. Its totient is φ = 2358720.

The previous prime is 8445433. The next prime is 8445449. The reversal of 8445444 is 4445448.

It is not an unprimeable number, because it can be changed into a prime (8445449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31029 + ... + 31299.

It is an arithmetic number, because the mean of its divisors is an integer number (325584).

Almost surely, 2^8445444 is an apocalyptic number.

8445444 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8445444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11721024).

8445444 is an abundant number, since it is smaller than the sum of its proper divisors (14996604).

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

8445444 is a wasteful number, since it uses less digits than its factorization.

8445444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 336 counting only the distinct ones).

The product of its digits is 40960, while the sum is 33.

The square root of 8445444 is about 2906.1046092665. The cubic root of 8445444 is about 203.6451925623.

The spelling of 8445444 in words is "eight million, four hundred forty-five thousand, four hundred forty-four".