4223866 has 4 divisors (see below), whose sum is σ = 6335802. Its totient is φ = 2111932.

The previous prime is 4223839. The next prime is 4223873. The reversal of 4223866 is 6683224.

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

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 841 = 2055^2 + 29^2 .

It is an Ulam number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1055965 + ... + 1055968.

Almost surely, 2^4223866 is an apocalyptic number.

4223866 is a deficient number, since it is larger than the sum of its proper divisors (2111936).

4223866 is a wasteful number, since it uses less digits than its factorization.

4223866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111935.

The product of its digits is 13824, while the sum is 31.

The square root of 4223866 is about 2055.2046126846. The cubic root of 4223866 is about 161.6478914439.

The spelling of 4223866 in words is "four million, two hundred twenty-three thousand, eight hundred sixty-six".