1081099 has 2 divisors, whose sum is σ = 1081100. Its totient is φ = 1081098.

The previous prime is 1081097. The next prime is 1081121. The reversal of 1081099 is 9901801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1081099 - 2¹ = 1081097 is a prime.

Together with 1081097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1081097) 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, 540549 + 540550.

It is an arithmetic number, because the mean of its divisors is an integer number (540550).

2^1081099 is an apocalyptic number.

1081099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081099 is an equidigital number, since it uses as much as digits as its factorization.

1081099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1081099 is about 1039.7591067166. The cubic root of 1081099 is about 102.6333461799.

The spelling of 1081099 in words is "one million, eighty-one thousand, ninety-nine".