11061209 has 8 divisors (see below), whose sum is σ = 11498760. Its totient is φ = 10627456.

The previous prime is 11061199. The next prime is 11061221. The reversal of 11061209 is 90216011.

It can be written as a sum of positive squares in 4 ways, for example, as 38809 + 11022400 = 197^2 + 3320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11061209 - 2¹² = 11057113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11061269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5939 + ... + 7575.

It is an arithmetic number, because the mean of its divisors is an integer number (1437345).

Almost surely, 2^11061209 is an apocalyptic number.

It is an amenable number.

11061209 is a deficient number, since it is larger than the sum of its proper divisors (437551).

11061209 is a wasteful number, since it uses less digits than its factorization.

11061209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11061209 is about 3325.8395932456. The cubic root of 11061209 is about 222.8097541572.

The spelling of 11061209 in words is "eleven million, sixty-one thousand, two hundred nine".