8409132647 has 2 divisors, whose sum is σ = 8409132648. Its totient is φ = 8409132646.

The previous prime is 8409132631. The next prime is 8409132691. The reversal of 8409132647 is 7462319048.

It is an a-pointer prime, because the next prime (8409132691) can be obtained adding 8409132647 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8409132647 - 2⁴ = 8409132631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8409132598 and 8409132607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8409132607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4204566323 + 4204566324.

It is an arithmetic number, because the mean of its divisors is an integer number (4204566324).

Almost surely, 2^8409132647 is an apocalyptic number.

8409132647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8409132647 is an equidigital number, since it uses as much as digits as its factorization.

8409132647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 8409132647 is about 91701.3230384382. The cubic root of 8409132647 is about 2033.5291443575.

The spelling of 8409132647 in words is "eight billion, four hundred nine million, one hundred thirty-two thousand, six hundred forty-seven".