3938723 has 2 divisors, whose sum is σ = 3938724. Its totient is φ = 3938722.

The previous prime is 3938717. The next prime is 3938731. The reversal of 3938723 is 3278393.

3938723 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 not a de Polignac number, because 3938723 - 2⁴ = 3938707 is a prime.

It is not a weakly prime, because it can be changed into another prime (3938743) 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, 1969361 + 1969362.

It is an arithmetic number, because the mean of its divisors is an integer number (1969362).

Almost surely, 2^3938723 is an apocalyptic number.

3938723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938723 is an equidigital number, since it uses as much as digits as its factorization.

3938723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 3938723 is about 1984.6216264064. The cubic root of 3938723 is about 157.9253372602.

The spelling of 3938723 in words is "three million, nine hundred thirty-eight thousand, seven hundred twenty-three".