11140609 has 4 divisors (see below), whose sum is σ = 11176516. Its totient is φ = 11104704.

The previous prime is 11140607. The next prime is 11140639. The reversal of 11140609 is 90604111.

11140609 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 10870209 = 520^2 + 3297^2 .

It is a cyclic number.

It is not a de Polignac number, because 11140609 - 2¹ = 11140607 is a prime.

It is a super-2 number, since 2×11140609² = 248226337781762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11140609.

It is not an unprimeable number, because it can be changed into a prime (11140601) 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, 17484 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (2794129).

Almost surely, 2^11140609 is an apocalyptic number.

It is an amenable number.

11140609 is a deficient number, since it is larger than the sum of its proper divisors (35907).

11140609 is an equidigital number, since it uses as much as digits as its factorization.

11140609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35906.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 11140609 is about 3337.7550838850. The cubic root of 11140609 is about 223.3416107919.

The spelling of 11140609 in words is "eleven million, one hundred forty thousand, six hundred nine".