808969247 has 2 divisors, whose sum is σ = 808969248. Its totient is φ = 808969246.

The previous prime is 808969241. The next prime is 808969261. The reversal of 808969247 is 742969808.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808969247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808969241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404484623 + 404484624.

It is an arithmetic number, because the mean of its divisors is an integer number (404484624).

Almost surely, 2^808969247 is an apocalyptic number.

808969247 is a deficient number, since it is larger than the sum of its proper divisors (1).

808969247 is an equidigital number, since it uses as much as digits as its factorization.

808969247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 808969247 is about 28442.3846925675. The cubic root of 808969247 is about 931.7741778674.

The spelling of 808969247 in words is "eight hundred eight million, nine hundred sixty-nine thousand, two hundred forty-seven".