4065947 has 2 divisors, whose sum is σ = 4065948. Its totient is φ = 4065946.

The previous prime is 4065937. The next prime is 4065953. The reversal of 4065947 is 7495604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4065947 is a prime.

It is not a weakly prime, because it can be changed into another prime (4065937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2032973 + 2032974.

It is an arithmetic number, because the mean of its divisors is an integer number (2032974).

Almost surely, 2^4065947 is an apocalyptic number.

4065947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4065947 is an equidigital number, since it uses as much as digits as its factorization.

4065947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 4065947 is about 2016.4193512263. The cubic root of 4065947 is about 159.6077239286.

The spelling of 4065947 in words is "four million, sixty-five thousand, nine hundred forty-seven".