857882899 has 2 divisors, whose sum is σ = 857882900. Its totient is φ = 857882898.

The previous prime is 857882881. The next prime is 857882923. The reversal of 857882899 is 998288758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 857882899 - 2⁵ = 857882867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 857882899.

It is not a weakly prime, because it can be changed into another prime (857822899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428941449 + 428941450.

It is an arithmetic number, because the mean of its divisors is an integer number (428941450).

Almost surely, 2^857882899 is an apocalyptic number.

857882899 is a deficient number, since it is larger than the sum of its proper divisors (1).

857882899 is an equidigital number, since it uses as much as digits as its factorization.

857882899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 64.

The square root of 857882899 is about 29289.6380824345. The cubic root of 857882899 is about 950.1875526286.

The spelling of 857882899 in words is "eight hundred fifty-seven million, eight hundred eighty-two thousand, eight hundred ninety-nine".