1100099509 has 2 divisors, whose sum is σ = 1100099510. Its totient is φ = 1100099508.

The previous prime is 1100099459. The next prime is 1100099519. The reversal of 1100099509 is 9059900011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628254225 + 471845284 = 25065^2 + 21722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100099509 - 2⁷ = 1100099381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100099519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550049754 + 550049755.

It is an arithmetic number, because the mean of its divisors is an integer number (550049755).

Almost surely, 2^1100099509 is an apocalyptic number.

It is an amenable number.

1100099509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100099509 is an equidigital number, since it uses as much as digits as its factorization.

1100099509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 1100099509 is about 33167.7480242479. The cubic root of 1100099509 is about 1032.3112421426.

The spelling of 1100099509 in words is "one billion, one hundred million, ninety-nine thousand, five hundred nine".