2239723 has 2 divisors, whose sum is σ = 2239724. Its totient is φ = 2239722.

The previous prime is 2239711. The next prime is 2239747. The reversal of 2239723 is 3279322.

2239723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2239723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2239691 and 2239700.

It is not a weakly prime, because it can be changed into another prime (2239703) by changing a digit.

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, 1119861 + 1119862.

It is an arithmetic number, because the mean of its divisors is an integer number (1119862).

2^2239723 is an apocalyptic number.

2239723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239723 is an equidigital number, since it uses as much as digits as its factorization.

2239723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 2239723 is about 1496.5704126435. The cubic root of 2239723 is about 130.8372588199.

The spelling of 2239723 in words is "two million, two hundred thirty-nine thousand, seven hundred twenty-three".