4400005 has 4 divisors (see below), whose sum is σ = 5280012. Its totient is φ = 3520000.

The previous prime is 4399987. The next prime is 4400021. The reversal of 4400005 is 5000044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3218436 + 1181569 = 1794^2 + 1087^2 .

It is not a de Polignac number, because 4400005 - 2⁵ = 4399973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439996 + ... + 440005.

It is an arithmetic number, because the mean of its divisors is an integer number (1320003).

Almost surely, 2^4400005 is an apocalyptic number.

It is an amenable number.

4400005 is a deficient number, since it is larger than the sum of its proper divisors (880007).

4400005 is an equidigital number, since it uses as much as digits as its factorization.

4400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880006.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 4400005 is about 2097.6188881682. The cubic root of 4400005 is about 163.8643161899.

Adding to 4400005 its reverse (5000044), we get a palindrome (9400049).

The spelling of 4400005 in words is "four million, four hundred thousand, five".