44440440444 has 18 divisors (see below), whose sum is σ = 112335557880. Its totient is φ = 14813480136.

The previous prime is 44440440439. The next prime is 44440440479. The reversal of 44440440444 is 44404404444.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1234456679 = 44440440444 / (4 + 4 + 4 + 4 + 0 + 4 + 4 + 0 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 44440440399 and 44440440408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617228304 + ... + 617228375.

Almost surely, 2^44440440444 is an apocalyptic number.

It is an amenable number.

44440440444 is an abundant number, since it is smaller than the sum of its proper divisors (67895117436).

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

44440440444 is a wasteful number, since it uses less digits than its factorization.

44440440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234456689 (or 1234456684 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 36.

Adding to 44440440444 its reverse (44404404444), we get a palindrome (88844844888).

The spelling of 44440440444 in words is "forty-four billion, four hundred forty million, four hundred forty thousand, four hundred forty-four".