855285329 has 2 divisors, whose sum is σ = 855285330. Its totient is φ = 855285328.

The previous prime is 855285311. The next prime is 855285341. The reversal of 855285329 is 923582558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 485761600 + 369523729 = 22040^2 + 19223^2 .

It is a cyclic number.

It is not a de Polignac number, because 855285329 - 2⁸ = 855285073 is a prime.

It is not a weakly prime, because it can be changed into another prime (855285359) 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, 427642664 + 427642665.

It is an arithmetic number, because the mean of its divisors is an integer number (427642665).

Almost surely, 2^855285329 is an apocalyptic number.

It is an amenable number.

855285329 is a deficient number, since it is larger than the sum of its proper divisors (1).

855285329 is an equidigital number, since it uses as much as digits as its factorization.

855285329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 47.

The square root of 855285329 is about 29245.2616503939. The cubic root of 855285329 is about 949.2275637993.

The spelling of 855285329 in words is "eight hundred fifty-five million, two hundred eighty-five thousand, three hundred twenty-nine".