44042440 has 32 divisors (see below), whose sum is σ = 106719480. Its totient is φ = 16261632.

The previous prime is 44042429. The next prime is 44042443. The reversal of 44042440 is 4424044.

It can be written as a sum of positive squares in 4 ways, for example, as 40678884 + 3363556 = 6378^2 + 1834^2 .

It is not an unprimeable number, because it can be changed into a prime (44042443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41829 + ... + 42868.

Almost surely, 2^44042440 is an apocalyptic number.

44042440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44042440 is an abundant number, since it is smaller than the sum of its proper divisors (62677040).

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

44042440 is a wasteful number, since it uses less digits than its factorization.

44042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84721 (or 84717 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 44042440 is about 6636.4478450448. The cubic root of 44042440 is about 353.1483031062.

Adding to 44042440 its reverse (4424044), we get a palindrome (48466484).

The spelling of 44042440 in words is "forty-four million, forty-two thousand, four hundred forty".