4000044023440 has 40 divisors (see below), whose sum is σ = 9301888714680. Its totient is φ = 1599710278656.

The previous prime is 4000044023383. The next prime is 4000044023449. The reversal of 4000044023440 is 443204400004.

It can be written as a sum of positive squares in 4 ways, for example, as 1542573936016 + 2457470087424 = 1242004^2 + 1567632^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (4000044023449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382719 + ... + 5216158.

It is an arithmetic number, because the mean of its divisors is an integer number (232547217867).

Almost surely, 2^{4000044023440} is an apocalyptic number.

4000044023440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4000044023440 is an abundant number, since it is smaller than the sum of its proper divisors (5301844691240).

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

4000044023440 is a wasteful number, since it uses less digits than its factorization.

4000044023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604099 (or 9604093 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 4000044023440 its reverse (443204400004), we get a palindrome (4443248423444).

The spelling of 4000044023440 in words is "four trillion, forty-four million, twenty-three thousand, four hundred forty".