4400020402420 has 48 divisors (see below), whose sum is σ = 9727389181440. Its totient is φ = 1667199874176.

The previous prime is 4400020402417. The next prime is 4400020402441. The reversal of 4400020402420 is 242040200044.

It is a junction number, because it is equal to n+sod(n) for n = 4400020402391 and 4400020402400.

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, 3015229 + ... + 4229851.

It is an arithmetic number, because the mean of its divisors is an integer number (202653941280).

Almost surely, 2^{4400020402420} is an apocalyptic number.

It is an amenable number.

4400020402420 is an abundant number, since it is smaller than the sum of its proper divisors (5327368779020).

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

4400020402420 is a wasteful number, since it uses less digits than its factorization.

4400020402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224184 (or 1224182 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 4400020402420 its reverse (242040200044), we get a palindrome (4642060602464).

The spelling of 4400020402420 in words is "four trillion, four hundred billion, twenty million, four hundred two thousand, four hundred twenty".