9090919219 has 2 divisors, whose sum is σ = 9090919220. Its totient is φ = 9090919218.

The previous prime is 9090919183. The next prime is 9090919237. The reversal of 9090919219 is 9129190909.

It is a strong prime.

It is an emirp because it is prime and its reverse (9129190909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9090919219 - 2⁷ = 9090919091 is a prime.

It is a super-2 number, since 2×9090919219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9090919319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545459609 + 4545459610.

It is an arithmetic number, because the mean of its divisors is an integer number (4545459610).

Almost surely, 2^9090919219 is an apocalyptic number.

9090919219 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090919219 is an equidigital number, since it uses as much as digits as its factorization.

9090919219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 118098, while the sum is 49.

The square root of 9090919219 is about 95346.3120367012. The cubic root of 9090919219 is about 2087.0647974820.

The spelling of 9090919219 in words is "nine billion, ninety million, nine hundred nineteen thousand, two hundred nineteen".