44039840 has 96 divisors (see below), whose sum is σ = 115831296. Its totient is φ = 15713280.

The previous prime is 44039803. The next prime is 44039851. The reversal of 44039840 is 4893044.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 44039797 and 44039806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64139 + ... + 64821.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^44039840 is an apocalyptic number.

44039840 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 44039840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57915648).

44039840 is an abundant number, since it is smaller than the sum of its proper divisors (71791456).

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

44039840 is a wasteful number, since it uses less digits than its factorization.

44039840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 44039840 is about 6636.2519542284. The cubic root of 44039840 is about 353.1413537209.

The spelling of 44039840 in words is "forty-four million, thirty-nine thousand, eight hundred forty".