4223817 has 18 divisors (see below), whose sum is σ = 6608862. Its totient is φ = 2598336.

The previous prime is 4223801. The next prime is 4223831. The reversal of 4223817 is 7183224.

It can be written as a sum of positive squares in 3 ways, for example, as 147456 + 4076361 = 384^2 + 2019^2 .

It is not a de Polignac number, because 4223817 - 2⁴ = 4223801 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁵ + 2¹⁰ + 2²² + 3⁸ + 8⁴ + 1 + 7⁵ .

4223817 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223897) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 133 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (367159).

Almost surely, 2^4223817 is an apocalyptic number.

It is an amenable number.

4223817 is a deficient number, since it is larger than the sum of its proper divisors (2385045).

4223817 is a wasteful number, since it uses less digits than its factorization.

4223817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2793 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4223817 is about 2055.1926916958. The cubic root of 4223817 is about 161.6472663628.

The spelling of 4223817 in words is "four million, two hundred twenty-three thousand, eight hundred seventeen".