4400040422020 has 24 divisors (see below), whose sum is σ = 9241979715864. Its totient is φ = 1759655248896.

The previous prime is 4400040421981. The next prime is 4400040422027. The reversal of 4400040422020 is 202240400044.

It can be written as a sum of positive squares in 4 ways, for example, as 664146762304 + 3735893659716 = 814952^2 + 1932846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4400040421982 and 4400040422000.

It is not an unprimeable number, because it can be changed into a prime (4400040422027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22457517 + ... + 22652596.

It is an arithmetic number, because the mean of its divisors is an integer number (385082488161).

Almost surely, 2^{4400040422020} is an apocalyptic number.

It is an amenable number.

4400040422020 is an abundant number, since it is smaller than the sum of its proper divisors (4841939293844).

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

4400040422020 is a wasteful number, since it uses less digits than its factorization.

4400040422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45114999 (or 45114997 counting only the distinct ones).

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

Adding to 4400040422020 its reverse (202240400044), we get a palindrome (4602280822064).

The spelling of 4400040422020 in words is "four trillion, four hundred billion, forty million, four hundred twenty-two thousand, twenty".