4008123943 has 2 divisors, whose sum is σ = 4008123944. Its totient is φ = 4008123942.

The previous prime is 4008123919. The next prime is 4008123947. The reversal of 4008123943 is 3493218004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4008123943 - 2¹³ = 4008115751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4008123899 and 4008123908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4008123947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004061971 + 2004061972.

It is an arithmetic number, because the mean of its divisors is an integer number (2004061972).

Almost surely, 2^4008123943 is an apocalyptic number.

4008123943 is a deficient number, since it is larger than the sum of its proper divisors (1).

4008123943 is an equidigital number, since it uses as much as digits as its factorization.

4008123943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4008123943 is about 63309.7460348721. The cubic root of 4008123943 is about 1588.4749882183.

The spelling of 4008123943 in words is "four billion, eight million, one hundred twenty-three thousand, nine hundred forty-three".