44421144 has 32 divisors (see below), whose sum is σ = 111449520. Its totient is φ = 14754176.

The previous prime is 44421133. The next prime is 44421149. The reversal of 44421144 is 44112444.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44421149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3874 + ... + 10190.

Almost surely, 2^44421144 is an apocalyptic number.

It is an amenable number.

44421144 is an abundant number, since it is smaller than the sum of its proper divisors (67028376).

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

44421144 is a wasteful number, since it uses less digits than its factorization.

44421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619 (or 6615 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 44421144 is about 6664.9189042328. The cubic root of 44421144 is about 354.1576111979.

Adding to 44421144 its reverse (44112444), we get a palindrome (88533588).

The spelling of 44421144 in words is "forty-four million, four hundred twenty-one thousand, one hundred forty-four".