448430909389 has 2 divisors, whose sum is σ = 448430909390. Its totient is φ = 448430909388.

The previous prime is 448430909387. The next prime is 448430909401. The reversal of 448430909389 is 983909034844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294420186025 + 154010723364 = 542605^2 + 392442^2 .

It is a cyclic number.

It is not a de Polignac number, because 448430909389 - 2¹ = 448430909387 is a prime.

Together with 448430909387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448430909387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224215454694 + 224215454695.

It is an arithmetic number, because the mean of its divisors is an integer number (224215454695).

Almost surely, 2^448430909389 is an apocalyptic number.

It is an amenable number.

448430909389 is a deficient number, since it is larger than the sum of its proper divisors (1).

448430909389 is an equidigital number, since it uses as much as digits as its factorization.

448430909389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 448430909389 in words is "four hundred forty-eight billion, four hundred thirty million, nine hundred nine thousand, three hundred eighty-nine".