853889851 has 2 divisors, whose sum is σ = 853889852. Its totient is φ = 853889850.

The previous prime is 853889819. The next prime is 853889857. The reversal of 853889851 is 158988358.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 853889851 - 2⁵ = 853889819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 853889792 and 853889801.

It is not a weakly prime, because it can be changed into another prime (853889857) 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, 426944925 + 426944926.

It is an arithmetic number, because the mean of its divisors is an integer number (426944926).

Almost surely, 2^853889851 is an apocalyptic number.

853889851 is a deficient number, since it is larger than the sum of its proper divisors (1).

853889851 is an equidigital number, since it uses as much as digits as its factorization.

853889851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2764800, while the sum is 55.

The square root of 853889851 is about 29221.3937210394. The cubic root of 853889851 is about 948.7110315933.

It can be divided in two parts, 8538 and 89851, that added together give a palindrome (98389).

The spelling of 853889851 in words is "eight hundred fifty-three million, eight hundred eighty-nine thousand, eight hundred fifty-one".