8999814217 has 2 divisors, whose sum is σ = 8999814218. Its totient is φ = 8999814216.

The previous prime is 8999814181. The next prime is 8999814281. The reversal of 8999814217 is 7124189998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7681470736 + 1318343481 = 87644^2 + 36309^2 .

It is a cyclic number.

It is not a de Polignac number, because 8999814217 - 2²⁷ = 8865596489 is a prime.

It is not a weakly prime, because it can be changed into another prime (8999814287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499907108 + 4499907109.

It is an arithmetic number, because the mean of its divisors is an integer number (4499907109).

Almost surely, 2^8999814217 is an apocalyptic number.

It is an amenable number.

8999814217 is a deficient number, since it is larger than the sum of its proper divisors (1).

8999814217 is an equidigital number, since it uses as much as digits as its factorization.

8999814217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 58.

The square root of 8999814217 is about 94867.3506376140. The cubic root of 8999814217 is about 2080.0695102048.

The spelling of 8999814217 in words is "eight billion, nine hundred ninety-nine million, eight hundred fourteen thousand, two hundred seventeen".