4020404024440 has 64 divisors (see below), whose sum is σ = 9201196620000. Its totient is φ = 1580784038400.

The previous prime is 4020404024437. The next prime is 4020404024459. The reversal of 4020404024440 is 444204040204.

It is a junction number, because it is equal to n+sod(n) for n = 4020404024399 and 4020404024408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018115 + ... + 4141234.

Almost surely, 2^{4020404024440} is an apocalyptic number.

4020404024440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020404024440 is an abundant number, since it is smaller than the sum of its proper divisors (5180792595560).

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

4020404024440 is a wasteful number, since it uses less digits than its factorization.

4020404024440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159600 (or 7159596 counting only the distinct ones).

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

Adding to 4020404024440 its reverse (444204040204), we get a palindrome (4464608064644).

The spelling of 4020404024440 in words is "four trillion, twenty billion, four hundred four million, twenty-four thousand, four hundred forty".