811138099 has 2 divisors, whose sum is σ = 811138100. Its totient is φ = 811138098.

The previous prime is 811138061. The next prime is 811138117. The reversal of 811138099 is 990831118.

It is a happy number.

811138099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 811138099 - 2¹⁵ = 811105331 is a prime.

It is not a weakly prime, because it can be changed into another prime (811138019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405569049 + 405569050.

It is an arithmetic number, because the mean of its divisors is an integer number (405569050).

Almost surely, 2^811138099 is an apocalyptic number.

811138099 is a deficient number, since it is larger than the sum of its proper divisors (1).

811138099 is an equidigital number, since it uses as much as digits as its factorization.

811138099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 811138099 is about 28480.4862844720. The cubic root of 811138099 is about 932.6061324335.

The spelling of 811138099 in words is "eight hundred eleven million, one hundred thirty-eight thousand, ninety-nine".