4444440 has 256 divisors, whose sum is σ = 18385920. Its totient is φ = 829440.

The previous prime is 4444409. The next prime is 4444469. The reversal of 4444440 is 444444.

4444440 = T₄₀ + T₄₁ + ... + T₂₉₈.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 4444440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120102 + ... + 120138.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

Almost surely, 2^4444440 is an apocalyptic number.

4444440 is a gapful number since it is divisible by the number (40) 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 4444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9192960).

4444440 is an abundant number, since it is smaller than the sum of its proper divisors (13941480).

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

4444440 is a wasteful number, since it uses less digits than its factorization.

4444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 4444440 is about 2108.1840526861. The cubic root of 4444440 is about 164.4140834840.

Adding to 4444440 its reverse (444444), we get a palindrome (4888884).

It can be divided in two parts, 4444 and 440, that added together give a palindrome (4884).

The spelling of 4444440 in words is "four million, four hundred forty-four thousand, four hundred forty".