4421217 has 8 divisors (see below), whose sum is σ = 6032224. Its totient is φ = 2878848.

The previous prime is 4421213. The next prime is 4421227. The reversal of 4421217 is 7121244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4421217 - 2² = 4421213 is a prime.

It is a super-2 number, since 2×4421217² = 39094319522178, which contains 22 as substring.

It is a Duffinian number.

4421217 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4421193 and 4421202.

It is not an unprimeable number, because it can be changed into a prime (4421213) 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 7 ways as a sum of consecutive naturals, for example, 17008 + ... + 17265.

It is an arithmetic number, because the mean of its divisors is an integer number (754028).

Almost surely, 2^4421217 is an apocalyptic number.

It is an amenable number.

4421217 is a deficient number, since it is larger than the sum of its proper divisors (1611007).

4421217 is a wasteful number, since it uses less digits than its factorization.

4421217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34319.

The product of its digits is 448, while the sum is 21.

The square root of 4421217 is about 2102.6690181767. The cubic root of 4421217 is about 164.1272188566.

The spelling of 4421217 in words is "four million, four hundred twenty-one thousand, two hundred seventeen".