44400040440 has 128 divisors (see below), whose sum is σ = 155769039360. Its totient is φ = 9912559104.

The previous prime is 44400040381. The next prime is 44400040499. The reversal of 44400040440 is 4404000444.

It is an interprime number because it is at equal distance from previous prime (44400040381) and next prime (44400040499).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 44400040440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578499 + ... + 650738.

It is an arithmetic number, because the mean of its divisors is an integer number (1216945620).

Almost surely, 2^44400040440 is an apocalyptic number.

44400040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44400040440 is an abundant number, since it is smaller than the sum of its proper divisors (111368998920).

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

44400040440 is a wasteful number, since it uses less digits than its factorization.

44400040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229301 (or 1229297 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 44400040440 its reverse (4404000444), we get a palindrome (48804040884).

It can be divided in two parts, 444000404 and 40, that added together give a palindrome (444000444).

The spelling of 44400040440 in words is "forty-four billion, four hundred million, forty thousand, four hundred forty".