4443421005 has 12 divisors (see below), whose sum is σ = 7701929820. Its totient is φ = 2369824512.

The previous prime is 4443420941. The next prime is 4443421007. The reversal of 4443421005 is 5001243444.

It is a happy number.

4443421005 is a `hidden beast` number, since 4 + 443 + 4 + 210 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2008294596 + 2435126409 = 44814^2 + 49347^2 .

It is not a de Polignac number, because 4443421005 - 2⁶ = 4443420941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4443421005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443421007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49371300 + ... + 49371389.

It is an arithmetic number, because the mean of its divisors is an integer number (641827485).

Almost surely, 2^4443421005 is an apocalyptic number.

4443421005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4443421005 is a deficient number, since it is larger than the sum of its proper divisors (3258508815).

4443421005 is a wasteful number, since it uses less digits than its factorization.

4443421005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98742700 (or 98742697 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 4443421005 is about 66658.9904288986. The cubic root of 4443421005 is about 1644.0151722631.

Adding to 4443421005 its reverse (5001243444), we get a palindrome (9444664449).

The spelling of 4443421005 in words is "four billion, four hundred forty-three million, four hundred twenty-one thousand, five".