4400420421144 has 64 divisors (see below), whose sum is σ = 12014378951040. Its totient is φ = 1331990472960.

The previous prime is 4400420421113. The next prime is 4400420421203. The reversal of 4400420421144 is 4411240240044.

It is a super-2 number, since 2×4400420421144² (a number of 26 digits) contains 22 as substring.

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, 8949229 + ... + 9428124.

It is an arithmetic number, because the mean of its divisors is an integer number (187724671110).

Almost surely, 2^{4400420421144} is an apocalyptic number.

4400420421144 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4400420421144 is an abundant number, since it is smaller than the sum of its proper divisors (7613958529896).

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

4400420421144 is a wasteful number, since it uses less digits than its factorization.

4400420421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378280 (or 18378276 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 4400420421144 its reverse (4411240240044), we get a palindrome (8811660661188).

The spelling of 4400420421144 in words is "four trillion, four hundred billion, four hundred twenty million, four hundred twenty-one thousand, one hundred forty-four".