4245444 has 72 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 1140480.

The previous prime is 4245443. The next prime is 4245469. The reversal of 4245444 is 4445424.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245443) 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, 3789 + ... + 4779.

It is an arithmetic number, because the mean of its divisors is an integer number (180544).

Almost surely, 2^4245444 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 4245444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6499584).

4245444 is an abundant number, since it is smaller than the sum of its proper divisors (8753724).

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

4245444 is a wasteful number, since it uses less digits than its factorization.

4245444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1020 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 4245444 is about 2060.4475242044. The cubic root of 4245444 is about 161.9226883045.

The spelling of 4245444 in words is "four million, two hundred forty-five thousand, four hundred forty-four".