4420021412440 has 64 divisors (see below), whose sum is σ = 10206394308000. Its totient is φ = 1722096875520.

The previous prime is 4420021412351. The next prime is 4420021412453. The reversal of 4420021412440 is 442141200244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4420021412399 and 4420021412408.

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, 8334001 + ... + 8848480.

Almost surely, 2^{4420021412440} is an apocalyptic number.

4420021412440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4420021412440 is an abundant number, since it is smaller than the sum of its proper divisors (5786372895560).

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

4420021412440 is a wasteful number, since it uses less digits than its factorization.

4420021412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17182660 (or 17182656 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 4420021412440 its reverse (442141200244), we get a palindrome (4862162612684).

The spelling of 4420021412440 in words is "four trillion, four hundred twenty billion, twenty-one million, four hundred twelve thousand, four hundred forty".