1089795199 has 4 divisors (see below), whose sum is σ = 1094554360. Its totient is φ = 1085036040.

The previous prime is 1089795193. The next prime is 1089795209. The reversal of 1089795199 is 9915979801.

It is a happy number.

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 1089795199 - 2³ = 1089795191 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 (1089795191) 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, 2379237 + ... + 2379694.

It is an arithmetic number, because the mean of its divisors is an integer number (273638590).

Almost surely, 2^1089795199 is an apocalyptic number.

1089795199 is a deficient number, since it is larger than the sum of its proper divisors (4759161).

1089795199 is an equidigital number, since it uses as much as digits as its factorization.

1089795199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759160.

The product of its (nonzero) digits is 1837080, while the sum is 58.

The square root of 1089795199 is about 33012.0462710205. The cubic root of 1089795199 is about 1029.0780070583.

The spelling of 1089795199 in words is "one billion, eighty-nine million, seven hundred ninety-five thousand, one hundred ninety-nine".