4223689 has 2 divisors, whose sum is σ = 4223690. Its totient is φ = 4223688.

The previous prime is 4223677. The next prime is 4223699. The reversal of 4223689 is 9863224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 537289 = 1920^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223689 - 2¹¹ = 4221641 is a prime.

4223689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4223629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111844 + 2111845.

It is an arithmetic number, because the mean of its divisors is an integer number (2111845).

Almost surely, 2^4223689 is an apocalyptic number.

It is an amenable number.

4223689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223689 is an equidigital number, since it uses as much as digits as its factorization.

4223689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 4223689 is about 2055.1615508276. The cubic root of 4223689 is about 161.6456334748.

The spelling of 4223689 in words is "four million, two hundred twenty-three thousand, six hundred eighty-nine".