44421000 has 256 divisors, whose sum is σ = 160392960. Its totient is φ = 10137600.

The previous prime is 44420951. The next prime is 44421001. The reversal of 44421000 is 12444.

44421000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44421001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 662967 + ... + 663033.

It is an arithmetic number, because the mean of its divisors is an integer number (626535).

Almost surely, 2^44421000 is an apocalyptic number.

44421000 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 44421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80196480).

44421000 is an abundant number, since it is smaller than the sum of its proper divisors (115971960).

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

44421000 is a wasteful number, since it uses less digits than its factorization.

44421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 44421000 is about 6664.9081013919. The cubic root of 44421000 is about 354.1572285067.

Adding to 44421000 its reverse (12444), we get a palindrome (44433444).

The spelling of 44421000 in words is "forty-four million, four hundred twenty-one thousand".