1099806 has 8 divisors (see below), whose sum is σ = 2199624. Its totient is φ = 366600.

The previous prime is 1099799. The next prime is 1099807. The reversal of 1099806 is 6089901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1099806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91645 + ... + 91656.

It is an arithmetic number, because the mean of its divisors is an integer number (274953).

2^1099806 is an apocalyptic number.

1099806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099806 is a wasteful number, since it uses less digits than its factorization.

1099806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183306.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1099806 is about 1048.7163582208. The cubic root of 1099806 is about 103.2219426330.

The spelling of 1099806 in words is "one million, ninety-nine thousand, eight hundred six".