4008123947 has 2 divisors, whose sum is σ = 4008123948. Its totient is φ = 4008123946.

The previous prime is 4008123943. The next prime is 4008124009. The reversal of 4008123947 is 7493218004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4008123947 - 2² = 4008123943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4008123947.

It is not a weakly prime, because it can be changed into another prime (4008123943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004061973 + 2004061974.

It is an arithmetic number, because the mean of its divisors is an integer number (2004061974).

Almost surely, 2^4008123947 is an apocalyptic number.

4008123947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4008123947 is an equidigital number, since it uses as much as digits as its factorization.

4008123947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 4008123947 is about 63309.7460664628. The cubic root of 4008123947 is about 1588.4749887467.

The spelling of 4008123947 in words is "four billion, eight million, one hundred twenty-three thousand, nine hundred forty-seven".