44440000 has 140 divisors (see below), whose sum is σ = 121404888. Its totient is φ = 16000000.

The previous prime is 44439973. The next prime is 44440003. The reversal of 44440000 is 4444.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44440003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 439950 + ... + 440050.

Almost surely, 2^44440000 is an apocalyptic number.

44440000 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 44440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60702444).

44440000 is an abundant number, since it is smaller than the sum of its proper divisors (76964888).

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

44440000 is a wasteful number, since it uses less digits than its factorization.

44440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 44440000 is about 6666.3333249996. Note that the first 4 decimals coincide. The cubic root of 44440000 is about 354.2077153498.

Adding to 44440000 its reverse (4444), we get a palindrome (44444444).

Subtracting from 44440000 its reverse (4444), we obtain a square (44435556 = 6666²).

Multiplying 44440000 by its reverse (4444), we get a square (197491360000 = 444400²).

44440000 divided by its reverse (4444) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 44 and 440000, that multiplied together give a square (19360000 = 4400²).

The spelling of 44440000 in words is "forty-four million, four hundred forty thousand".