855738199 has 2 divisors, whose sum is σ = 855738200. Its totient is φ = 855738198.

The previous prime is 855738157. The next prime is 855738203. The reversal of 855738199 is 991837558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855738199 - 2¹⁹ = 855213911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855738799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427869099 + 427869100.

It is an arithmetic number, because the mean of its divisors is an integer number (427869100).

Almost surely, 2^855738199 is an apocalyptic number.

855738199 is a deficient number, since it is larger than the sum of its proper divisors (1).

855738199 is an equidigital number, since it uses as much as digits as its factorization.

855738199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 55.

The square root of 855738199 is about 29253.0032475300. The cubic root of 855738199 is about 949.3950715778.

The spelling of 855738199 in words is "eight hundred fifty-five million, seven hundred thirty-eight thousand, one hundred ninety-nine".