4442215 has 4 divisors (see below), whose sum is σ = 5330664. Its totient is φ = 3553768.

The previous prime is 4442213. The next prime is 4442231. The reversal of 4442215 is 5122444.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4442215 - 2¹ = 4442213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444217 + ... + 444226.

It is an arithmetic number, because the mean of its divisors is an integer number (1332666).

Almost surely, 2^4442215 is an apocalyptic number.

4442215 is a deficient number, since it is larger than the sum of its proper divisors (888449).

4442215 is an equidigital number, since it uses as much as digits as its factorization.

4442215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888448.

The product of its digits is 1280, while the sum is 22.

The square root of 4442215 is about 2107.6562812755. The cubic root of 4442215 is about 164.3866422766.

Adding to 4442215 its reverse (5122444), we get a palindrome (9564659).

The spelling of 4442215 in words is "four million, four hundred forty-two thousand, two hundred fifteen".