1109120489 has 2 divisors, whose sum is σ = 1109120490. Its totient is φ = 1109120488.

The previous prime is 1109120447. The next prime is 1109120503. The reversal of 1109120489 is 9840219011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 562496089 + 546624400 = 23717^2 + 23380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109120489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1109020489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554560244 + 554560245.

It is an arithmetic number, because the mean of its divisors is an integer number (554560245).

Almost surely, 2^1109120489 is an apocalyptic number.

It is an amenable number.

1109120489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109120489 is an equidigital number, since it uses as much as digits as its factorization.

1109120489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1109120489 is about 33303.4606159780. The cubic root of 1109120489 is about 1035.1252663307.

The spelling of 1109120489 in words is "one billion, one hundred nine million, one hundred twenty thousand, four hundred eighty-nine".