4378444 has 36 divisors (see below), whose sum is σ = 9049320. Its totient is φ = 1848000.

The previous prime is 4378403. The next prime is 4378447. The reversal of 4378444 is 4448734.

It is a super-2 number, since 2×4378444² = 38341543722272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4378447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17319 + ... + 17569.

It is an arithmetic number, because the mean of its divisors is an integer number (251370).

Almost surely, 2^4378444 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 4378444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4524660).

4378444 is an abundant number, since it is smaller than the sum of its proper divisors (4670876).

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

4378444 is a wasteful number, since it uses less digits than its factorization.

4378444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 349 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 4378444 is about 2092.4731778448. The cubic root of 4378444 is about 163.5962206431.

It can be divided in two parts, 43 and 78444, that added together give a palindrome (78487).

The spelling of 4378444 in words is "four million, three hundred seventy-eight thousand, four hundred forty-four".