40444400202440 has 32 divisors (see below), whose sum is σ = 97999892799480. Its totient is φ = 14933316997632.

The previous prime is 40444400202397. The next prime is 40444400202463. The reversal of 40444400202440 is 4420200444404.

It can be written as a sum of positive squares in 4 ways, for example, as 13341735137956 + 27102665064484 = 3652634^2 + 5206022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40444400202397 and 40444400202406.

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, 38888845829 + ... + 38888846868.

Almost surely, 2^{40444400202440} is an apocalyptic number.

40444400202440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40444400202440 is an abundant number, since it is smaller than the sum of its proper divisors (57555492597040).

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

40444400202440 is a wasteful number, since it uses less digits than its factorization.

40444400202440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77777692721 (or 77777692717 counting only the distinct ones).

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

Adding to 40444400202440 its reverse (4420200444404), we get a palindrome (44864600646844).

The spelling of 40444400202440 in words is "forty trillion, four hundred forty-four billion, four hundred million, two hundred two thousand, four hundred forty".