1099443229 has 4 divisors (see below), whose sum is σ = 1118077920. Its totient is φ = 1080808540.

The previous prime is 1099443203. The next prime is 1099443253. The reversal of 1099443229 is 9223449901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1099443229 - 2¹⁵ = 1099410461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099443269) 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 in 3 ways as a sum of consecutive naturals, for example, 9317257 + ... + 9317374.

It is an arithmetic number, because the mean of its divisors is an integer number (279519480).

Almost surely, 2^1099443229 is an apocalyptic number.

It is an amenable number.

1099443229 is a deficient number, since it is larger than the sum of its proper divisors (18634691).

1099443229 is an equidigital number, since it uses as much as digits as its factorization.

1099443229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18634690.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1099443229 is about 33157.8532025220. The cubic root of 1099443229 is about 1032.1059213263.

The spelling of 1099443229 in words is "one billion, ninety-nine million, four hundred forty-three thousand, two hundred twenty-nine".