8634947 has 2 divisors, whose sum is σ = 8634948. Its totient is φ = 8634946.

The previous prime is 8634917. The next prime is 8634961. The reversal of 8634947 is 7494368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8634947 - 2⁶ = 8634883 is a prime.

It is not a weakly prime, because it can be changed into another prime (8634907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4317473 + 4317474.

It is an arithmetic number, because the mean of its divisors is an integer number (4317474).

Almost surely, 2^8634947 is an apocalyptic number.

8634947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8634947 is an equidigital number, since it uses as much as digits as its factorization.

8634947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 8634947 is about 2938.5280328763. The cubic root of 8634947 is about 205.1571034464.

The spelling of 8634947 in words is "eight million, six hundred thirty-four thousand, nine hundred forty-seven".