44421888 has 72 divisors (see below), whose sum is σ = 135132928. Its totient is φ = 12690432.

The previous prime is 44421869. The next prime is 44421913. The reversal of 44421888 is 88812444.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245 + ... + 9507.

Almost surely, 2^44421888 is an apocalyptic number.

44421888 is a gapful number since it is divisible by the number (48) 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 44421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67566464).

44421888 is an abundant number, since it is smaller than the sum of its proper divisors (90711040).

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

44421888 is an equidigital number, since it uses as much as digits as its factorization.

44421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8289 (or 8275 counting only the distinct ones).

The product of its digits is 65536, while the sum is 39.

The square root of 44421888 is about 6664.9747186317. The cubic root of 44421888 is about 354.1595884229.

The spelling of 44421888 in words is "forty-four million, four hundred twenty-one thousand, eight hundred eighty-eight".