855499 has 2 divisors, whose sum is σ = 855500. Its totient is φ = 855498.

The previous prime is 855467. The next prime is 855511. The reversal of 855499 is 994558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855499 - 2⁵ = 855467 is a prime.

It is not a weakly prime, because it can be changed into another prime (855419) 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, 427749 + 427750.

It is an arithmetic number, because the mean of its divisors is an integer number (427750).

2⁸⁵⁵⁴⁹⁹ is an apocalyptic number.

855499 is a deficient number, since it is larger than the sum of its proper divisors (1).

855499 is an equidigital number, since it uses as much as digits as its factorization.

855499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 855499 is about 924.9318893843. The cubic root of 855499 is about 94.9306603900.

It can be divided in two parts, 85549 and 9, that added together give a palindrome (85558).

The spelling of 855499 in words is "eight hundred fifty-five thousand, four hundred ninety-nine".