1101090899 has 4 divisors (see below), whose sum is σ = 1101169440. Its totient is φ = 1101012360.

The previous prime is 1101090857. The next prime is 1101090911. The reversal of 1101090899 is 9980901011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101090899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101090499) 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, 11867 + ... + 48404.

It is an arithmetic number, because the mean of its divisors is an integer number (275292360).

Almost surely, 2^1101090899 is an apocalyptic number.

1101090899 is a deficient number, since it is larger than the sum of its proper divisors (78541).

1101090899 is an equidigital number, since it uses as much as digits as its factorization.

1101090899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78540.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 1101090899 is about 33182.6897493256. The cubic root of 1101090899 is about 1032.6212491792.

The spelling of 1101090899 in words is "one billion, one hundred one million, ninety thousand, eight hundred ninety-nine".