855416899 has 2 divisors, whose sum is σ = 855416900. Its totient is φ = 855416898.

The previous prime is 855416867. The next prime is 855416909. The reversal of 855416899 is 998614558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855416899 - 2⁵ = 855416867 is a prime.

It is a super-3 number, since 3×855416899³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (855416839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427708449 + 427708450.

It is an arithmetic number, because the mean of its divisors is an integer number (427708450).

Almost surely, 2^855416899 is an apocalyptic number.

855416899 is a deficient number, since it is larger than the sum of its proper divisors (1).

855416899 is an equidigital number, since it uses as much as digits as its factorization.

855416899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 55.

The square root of 855416899 is about 29247.5109881166. The cubic root of 855416899 is about 949.2762350683.

The spelling of 855416899 in words is "eight hundred fifty-five million, four hundred sixteen thousand, eight hundred ninety-nine".