818099 has 2 divisors, whose sum is σ = 818100. Its totient is φ = 818098.

The previous prime is 818093. The next prime is 818101. The reversal of 818099 is 990818.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 818099 - 2¹² = 814003 is a prime.

Together with 818101, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (818093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409049 + 409050.

It is an arithmetic number, because the mean of its divisors is an integer number (409050).

2⁸¹⁸⁰⁹⁹ is an apocalyptic number.

818099 is a deficient number, since it is larger than the sum of its proper divisors (1).

818099 is an equidigital number, since it uses as much as digits as its factorization.

818099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 818099 is about 904.4882531023. The cubic root of 818099 is about 93.5266302938.

It can be divided in two parts, 81809 and 9, that added together give a palindrome (81818).

The spelling of 818099 in words is "eight hundred eighteen thousand, ninety-nine".