8447899 has 2 divisors, whose sum is σ = 8447900. Its totient is φ = 8447898.

The previous prime is 8447897. The next prime is 8447911. The reversal of 8447899 is 9987448.

8447899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8447899 - 2¹ = 8447897 is a prime.

Together with 8447897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8447893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223949 + 4223950.

It is an arithmetic number, because the mean of its divisors is an integer number (4223950).

Almost surely, 2^8447899 is an apocalyptic number.

8447899 is a deficient number, since it is larger than the sum of its proper divisors (1).

8447899 is an equidigital number, since it uses as much as digits as its factorization.

8447899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 49.

The square root of 8447899 is about 2906.5269652972. The cubic root of 8447899 is about 203.6649231418.

The spelling of 8447899 in words is "eight million, four hundred forty-seven thousand, eight hundred ninety-nine".