1099804043 has 4 divisors (see below), whose sum is σ = 1184404368. Its totient is φ = 1015203720.

The previous prime is 1099804009. The next prime is 1099804067. The reversal of 1099804043 is 3404089901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1099804043 - 2²⁶ = 1032695179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1099803988 and 1099804006.

It is not an unprimeable number, because it can be changed into a prime (1099804093) 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, 42300143 + ... + 42300168.

It is an arithmetic number, because the mean of its divisors is an integer number (296101092).

Almost surely, 2^1099804043 is an apocalyptic number.

1099804043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1099804043 is a deficient number, since it is larger than the sum of its proper divisors (84600325).

1099804043 is an equidigital number, since it uses as much as digits as its factorization.

1099804043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84600324.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1099804043 is about 33163.2936090491. The cubic root of 1099804043 is about 1032.2188140844.

The spelling of 1099804043 in words is "one billion, ninety-nine million, eight hundred four thousand, forty-three".