4047647 has 2 divisors, whose sum is σ = 4047648. Its totient is φ = 4047646.

The previous prime is 4047629. The next prime is 4047697. The reversal of 4047647 is 7467404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4047647 - 2⁶ = 4047583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4047607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023823 + 2023824.

It is an arithmetic number, because the mean of its divisors is an integer number (2023824).

Almost surely, 2^4047647 is an apocalyptic number.

4047647 is a deficient number, since it is larger than the sum of its proper divisors (1).

4047647 is an equidigital number, since it uses as much as digits as its factorization.

4047647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 4047647 is about 2011.8764872626. The cubic root of 4047647 is about 159.3679098217.

The spelling of 4047647 in words is "four million, forty-seven thousand, six hundred forty-seven".