9119541209 has 4 divisors (see below), whose sum is σ = 9119819940. Its totient is φ = 9119262480.

The previous prime is 9119541191. The next prime is 9119541241. The reversal of 9119541209 is 9021459119.

It is a happy number.

9119541209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9021459119 = 23 ⋅392237353.

It can be written as a sum of positive squares in 2 ways, for example, as 5864496400 + 3255044809 = 76580^2 + 57053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9119541209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9119541259) 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, 82574 + ... + 158295.

It is an arithmetic number, because the mean of its divisors is an integer number (2279954985).

Almost surely, 2^9119541209 is an apocalyptic number.

It is an amenable number.

9119541209 is a deficient number, since it is larger than the sum of its proper divisors (278731).

9119541209 is a wasteful number, since it uses less digits than its factorization.

9119541209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278730.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 9119541209 is about 95496.2889802530. The cubic root of 9119541209 is about 2089.2528184642.

The spelling of 9119541209 in words is "nine billion, one hundred nineteen million, five hundred forty-one thousand, two hundred nine".