11078009 has 4 divisors (see below), whose sum is σ = 11113716. Its totient is φ = 11042304.

The previous prime is 11078003. The next prime is 11078021. The reversal of 11078009 is 90087011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90087011 = 7 ⋅12869573.

It can be written as a sum of positive squares in 2 ways, for example, as 5569600 + 5508409 = 2360^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 11078009 - 2²⁰ = 10029433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11078003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17384 + ... + 18009.

It is an arithmetic number, because the mean of its divisors is an integer number (2778429).

Almost surely, 2^11078009 is an apocalyptic number.

It is an amenable number.

11078009 is a deficient number, since it is larger than the sum of its proper divisors (35707).

11078009 is an equidigital number, since it uses as much as digits as its factorization.

11078009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35706.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 11078009 is about 3328.3643129922. The cubic root of 11078009 is about 222.9224998309.

The spelling of 11078009 in words is "eleven million, seventy-eight thousand, nine".