40444022220440 has 64 divisors (see below), whose sum is σ = 93186341136000. Its totient is φ = 15793358929920.

The previous prime is 40444022220439. The next prime is 40444022220443. The reversal of 40444022220440 is 4402222044404.

It is a junction number, because it is equal to n+sod(n) for n = 40444022220397 and 40444022220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444022220443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71621801 + ... + 72184280.

It is an arithmetic number, because the mean of its divisors is an integer number (1456036580250).

Almost surely, 2^{40444022220440} is an apocalyptic number.

40444022220440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40444022220440 is an abundant number, since it is smaller than the sum of its proper divisors (52742318915560).

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

40444022220440 is a wasteful number, since it uses less digits than its factorization.

40444022220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143806260 (or 143806256 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 40444022220440 its reverse (4402222044404), we get a palindrome (44846244264844).

The spelling of 40444022220440 in words is "forty trillion, four hundred forty-four billion, twenty-two million, two hundred twenty thousand, four hundred forty".