4223993 has 2 divisors, whose sum is σ = 4223994. Its totient is φ = 4223992.

The previous prime is 4223983. The next prime is 4224037. The reversal of 4223993 is 3993224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3286969 + 937024 = 1813^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223993 - 2⁴ = 4223977 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is equal to p₂₉₇₉₀₅ and since 4223993 and 297905 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4223903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111996 + 2111997.

It is an arithmetic number, because the mean of its divisors is an integer number (2111997).

Almost surely, 2^4223993 is an apocalyptic number.

It is an amenable number.

4223993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223993 is an equidigital number, since it uses as much as digits as its factorization.

4223993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 4223993 is about 2055.2355096193. The cubic root of 4223993 is about 161.6495115298.

The spelling of 4223993 in words is "four million, two hundred twenty-three thousand, nine hundred ninety-three".