44000400440 has 32 divisors (see below), whose sum is σ = 100623872160. Its totient is φ = 17311632000.

The previous prime is 44000400439. The next prime is 44000400473. The reversal of 44000400440 is 4400400044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9014036 + ... + 9018915.

It is an arithmetic number, because the mean of its divisors is an integer number (3144496005).

Almost surely, 2^44000400440 is an apocalyptic number.

44000400440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44000400440 is an abundant number, since it is smaller than the sum of its proper divisors (56623471720).

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

44000400440 is a wasteful number, since it uses less digits than its factorization.

44000400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18033023 (or 18033019 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 44000400440 its reverse (4400400044), we get a palindrome (48400800484).

The spelling of 44000400440 in words is "forty-four billion, four hundred thousand, four hundred forty".