4004000647 has 2 divisors, whose sum is σ = 4004000648. Its totient is φ = 4004000646.

The previous prime is 4004000617. The next prime is 4004000653. The reversal of 4004000647 is 7460004004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4004000647 - 2¹¹ = 4003998599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4004000617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002000323 + 2002000324.

It is an arithmetic number, because the mean of its divisors is an integer number (2002000324).

Almost surely, 2^4004000647 is an apocalyptic number.

4004000647 is a deficient number, since it is larger than the sum of its proper divisors (1).

4004000647 is an equidigital number, since it uses as much as digits as its factorization.

4004000647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 4004000647 is about 63277.1731906538. The cubic root of 4004000647 is about 1587.9300949026.

The spelling of 4004000647 in words is "four billion, four million, six hundred forty-seven", and thus it is an aban number.