384855087209 has 2 divisors, whose sum is σ = 384855087210. Its totient is φ = 384855087208.

The previous prime is 384855087187. The next prime is 384855087269. The reversal of 384855087209 is 902780558483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262890001984 + 121965085225 = 512728^2 + 349235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384855087209 is a prime.

It is a super-2 number, since 2×384855087209² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (384855087269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192427543604 + 192427543605.

It is an arithmetic number, because the mean of its divisors is an integer number (192427543605).

Almost surely, 2^384855087209 is an apocalyptic number.

It is an amenable number.

384855087209 is a deficient number, since it is larger than the sum of its proper divisors (1).

384855087209 is an equidigital number, since it uses as much as digits as its factorization.

384855087209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 384855087209 in words is "three hundred eighty-four billion, eight hundred fifty-five million, eighty-seven thousand, two hundred nine".