40444444440 has 96 divisors (see below), whose sum is σ = 132921453600. Its totient is φ = 10663994880.

The previous prime is 40444444433. The next prime is 40444444457. The reversal of 40444444440 is 4444444404.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40444444395 and 40444444404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599116 + ... + 663195.

It is an arithmetic number, because the mean of its divisors is an integer number (1384598475).

Almost surely, 2^40444444440 is an apocalyptic number.

40444444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40444444440 is an abundant number, since it is smaller than the sum of its proper divisors (92477009160).

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

40444444440 is a wasteful number, since it uses less digits than its factorization.

40444444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262417 (or 1262410 counting only the distinct ones).

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

Subtracting from 40444444440 its sum of digits (36), we obtain a palindrome (40444444404).

Adding to 40444444440 its reverse (4444444404), we get a palindrome (44888888844).

The spelling of 40444444440 in words is "forty billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty".