8446669457 has 2 divisors, whose sum is σ = 8446669458. Its totient is φ = 8446669456.

The previous prime is 8446669403. The next prime is 8446669459. The reversal of 8446669457 is 7549666448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8200932481 + 245736976 = 90559^2 + 15676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8446669457 is a prime.

Together with 8446669459, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8446669396 and 8446669405.

It is not a weakly prime, because it can be changed into another prime (8446669459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223334728 + 4223334729.

It is an arithmetic number, because the mean of its divisors is an integer number (4223334729).

Almost surely, 2^8446669457 is an apocalyptic number.

It is an amenable number.

8446669457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8446669457 is an equidigital number, since it uses as much as digits as its factorization.

8446669457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 59.

The square root of 8446669457 is about 91905.7640031353. The cubic root of 8446669457 is about 2036.5504191053.

The spelling of 8446669457 in words is "eight billion, four hundred forty-six million, six hundred sixty-nine thousand, four hundred fifty-seven".