4243823 has 2 divisors, whose sum is σ = 4243824. Its totient is φ = 4243822.

The previous prime is 4243819. The next prime is 4243861. The reversal of 4243823 is 3283424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4243823 - 2² = 4243819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4243792 and 4243801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4240823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121911 + 2121912.

It is an arithmetic number, because the mean of its divisors is an integer number (2121912).

Almost surely, 2^4243823 is an apocalyptic number.

4243823 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243823 is an equidigital number, since it uses as much as digits as its factorization.

4243823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 26.

The square root of 4243823 is about 2060.0541255025. The cubic root of 4243823 is about 161.9020771826.

The spelling of 4243823 in words is "four million, two hundred forty-three thousand, eight hundred twenty-three".