4427217 has 14 divisors (see below), whose sum is σ = 6638882. Its totient is φ = 2950992.

The previous prime is 4427173. The next prime is 4427251. The reversal of 4427217 is 7127244.

It is a happy number.

4427217 is a `hidden beast` number, since 442 + 7 + 217 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4322241 + 104976 = 2079^2 + 324^2 .

It is not a de Polignac number, because 4427217 - 2¹⁰ = 4426193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4427287) 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 13 ways as a sum of consecutive naturals, for example, 2308 + ... + 3765.

Almost surely, 2^4427217 is an apocalyptic number.

It is an amenable number.

4427217 is a deficient number, since it is larger than the sum of its proper divisors (2211665).

4427217 is an frugal number, since it uses more digits than its factorization.

4427217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091 (or 6076 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 4427217 is about 2104.0952925189. The cubic root of 4427217 is about 164.2014305632.

Adding to 4427217 its sum of digits (27), we get a palindrome (4427244).

It can be divided in two parts, 44 and 27217, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 4427217 in words is "four million, four hundred twenty-seven thousand, two hundred seventeen".