1085799 has 16 divisors (see below), whose sum is σ = 1701504. Its totient is φ = 607200.

The previous prime is 1085779. The next prime is 1085801. The reversal of 1085799 is 9975801.

It is a happy number.

It is not a de Polignac number, because 1085799 - 2⁵ = 1085767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (106344).

2^1085799 is an apocalyptic number.

1085799 is a deficient number, since it is larger than the sum of its proper divisors (615705).

1085799 is a wasteful number, since it uses less digits than its factorization.

1085799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1085799 is about 1042.0167944904. The cubic root of 1085799 is about 102.7818615265.

The spelling of 1085799 in words is "one million, eighty-five thousand, seven hundred ninety-nine".