2220443405 has 4 divisors (see below), whose sum is σ = 2664532092. Its totient is φ = 1776354720.

The previous prime is 2220443387. The next prime is 2220443411. The reversal of 2220443405 is 5043440222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5043440222 = 2 ⋅2521720111.

It can be written as a sum of positive squares in 2 ways, for example, as 323928004 + 1896515401 = 17998^2 + 43549^2 .

It is not a de Polignac number, because 2220443405 - 2²⁶ = 2153334541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222044336 + ... + 222044345.

It is an arithmetic number, because the mean of its divisors is an integer number (666133023).

Almost surely, 2^2220443405 is an apocalyptic number.

It is an amenable number.

2220443405 is a deficient number, since it is larger than the sum of its proper divisors (444088687).

2220443405 is an equidigital number, since it uses as much as digits as its factorization.

2220443405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444088686.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2220443405 is about 47121.5810961390. The cubic root of 2220443405 is about 1304.6075957437.

Adding to 2220443405 its reverse (5043440222), we get a palindrome (7263883627).

The spelling of 2220443405 in words is "two billion, two hundred twenty million, four hundred forty-three thousand, four hundred five".