44447172 has 72 divisors (see below), whose sum is σ = 130310208. Its totient is φ = 11542080.

The previous prime is 44447159. The next prime is 44447177. The reversal of 44447172 is 27174444.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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

It is not an unprimeable number, because it can be changed into a prime (44447177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7978 + ... + 12350.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^44447172 is an apocalyptic number.

44447172 is a gapful number since it is divisible by the number (42) 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 44447172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65155104).

44447172 is an abundant number, since it is smaller than the sum of its proper divisors (85863036).

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

44447172 is a wasteful number, since it uses less digits than its factorization.

44447172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409 (or 4396 counting only the distinct ones).

The product of its digits is 25088, while the sum is 33.

The square root of 44447172 is about 6666.8712301949. The cubic root of 44447172 is about 354.2267690634.

The spelling of 44447172 in words is "forty-four million, four hundred forty-seven thousand, one hundred seventy-two".