4220005 has 4 divisors (see below), whose sum is σ = 5064012. Its totient is φ = 3376000.

The previous prime is 4219991. The next prime is 4220039. The reversal of 4220005 is 5000224.

It is a happy number.

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 1454436 + 2765569 = 1206^2 + 1663^2 .

It is not a de Polignac number, because 4220005 - 2¹⁹ = 3695717 is a prime.

It is a Duffinian number.

4220005 is a lucky 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, 421996 + ... + 422005.

It is an arithmetic number, because the mean of its divisors is an integer number (1266003).

Almost surely, 2^4220005 is an apocalyptic number.

It is an amenable number.

4220005 is a deficient number, since it is larger than the sum of its proper divisors (844007).

4220005 is an equidigital number, since it uses as much as digits as its factorization.

4220005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844006.

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

The square root of 4220005 is about 2054.2650753980. The cubic root of 4220005 is about 161.5986227744.

Adding to 4220005 its reverse (5000224), we get a palindrome (9220229).

The spelling of 4220005 in words is "four million, two hundred twenty thousand, five".