6448442459 has 2 divisors, whose sum is σ = 6448442460. Its totient is φ = 6448442458.

The previous prime is 6448442417. The next prime is 6448442461. The reversal of 6448442459 is 9542448446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448442459 is a prime.

It is a Sophie Germain prime.

Together with 6448442461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6448442479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224221229 + 3224221230.

It is an arithmetic number, because the mean of its divisors is an integer number (3224221230).

Almost surely, 2^6448442459 is an apocalyptic number.

6448442459 is a deficient number, since it is larger than the sum of its proper divisors (1).

6448442459 is an equidigital number, since it uses as much as digits as its factorization.

6448442459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4423680, while the sum is 50.

The square root of 6448442459 is about 80302.1946088648. The cubic root of 6448442459 is about 1861.3081385245.

The spelling of 6448442459 in words is "six billion, four hundred forty-eight million, four hundred forty-two thousand, four hundred fifty-nine".