4000747 has 2 divisors, whose sum is σ = 4000748. Its totient is φ = 4000746.

The previous prime is 4000741. The next prime is 4000751. The reversal of 4000747 is 7470004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4000741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000373 + 2000374.

It is an arithmetic number, because the mean of its divisors is an integer number (2000374).

Almost surely, 2^4000747 is an apocalyptic number.

4000747 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000747 is an equidigital number, since it uses as much as digits as its factorization.

4000747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 4000747 is about 2000.1867412819. The cubic root of 4000747 is about 158.7499861533.

The spelling of 4000747 in words is "four million, seven hundred forty-seven", and thus it is an aban number.