4040404040440 has 16 divisors (see below), whose sum is σ = 9090909091080. Its totient is φ = 1616161616160.

The previous prime is 4040404040383. The next prime is 4040404040443. The reversal of 4040404040440 is 440404040404.

It is a junction number, because it is equal to n+sod(n) for n = 4040404040399 and 4040404040408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040404040443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50505050466 + ... + 50505050545.

Almost surely, 2^{4040404040440} is an apocalyptic number.

4040404040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040404040440 is an abundant number, since it is smaller than the sum of its proper divisors (5050505050640).

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

4040404040440 is a wasteful number, since it uses less digits than its factorization.

4040404040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101010101022 (or 101010101018 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 4040404040440 its reverse (440404040404), we get a palindrome (4480808080844).

The spelling of 4040404040440 in words is "four trillion, forty billion, four hundred four million, forty thousand, four hundred forty".