3996404723 has 2 divisors, whose sum is σ = 3996404724. Its totient is φ = 3996404722.

The previous prime is 3996404717. The next prime is 3996404747. The reversal of 3996404723 is 3274046993.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3996404723 - 2¹⁰ = 3996403699 is a prime.

It is not a weakly prime, because it can be changed into another prime (3996406723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998202361 + 1998202362.

It is an arithmetic number, because the mean of its divisors is an integer number (1998202362).

Almost surely, 2^3996404723 is an apocalyptic number.

3996404723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996404723 is an equidigital number, since it uses as much as digits as its factorization.

3996404723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 47.

The square root of 3996404723 is about 63217.1236533267. The cubic root of 3996404723 is about 1586.9253138645.

The spelling of 3996404723 in words is "three billion, nine hundred ninety-six million, four hundred four thousand, seven hundred twenty-three".