447857983 has 2 divisors, whose sum is σ = 447857984. Its totient is φ = 447857982.

The previous prime is 447857981. The next prime is 447858017. The reversal of 447857983 is 389758744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447857983 - 2¹ = 447857981 is a prime.

Together with 447857981, 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 (447857981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223928991 + 223928992.

It is an arithmetic number, because the mean of its divisors is an integer number (223928992).

Almost surely, 2^447857983 is an apocalyptic number.

447857983 is a deficient number, since it is larger than the sum of its proper divisors (1).

447857983 is an equidigital number, since it uses as much as digits as its factorization.

447857983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The square root of 447857983 is about 21162.6553863167. The cubic root of 447857983 is about 765.0916107699.

The spelling of 447857983 in words is "four hundred forty-seven million, eight hundred fifty-seven thousand, nine hundred eighty-three".