1099443 has 8 divisors (see below), whose sum is σ = 1484800. Its totient is φ = 723528.

The previous prime is 1099433. The next prime is 1099459. The reversal of 1099443 is 3449901.

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

It is not a de Polignac number, because 1099443 - 2⁵ = 1099411 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1099443.

It is not an unprimeable number, because it can be changed into a prime (1099433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (185600).

2^1099443 is an apocalyptic number.

1099443 is a deficient number, since it is larger than the sum of its proper divisors (385357).

1099443 is an equidigital number, since it uses as much as digits as its factorization.

1099443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1099443 is about 1048.5432752157. The cubic root of 1099443 is about 103.2105849668.

The spelling of 1099443 in words is "one million, ninety-nine thousand, four hundred forty-three".