11085309 has 16 divisors (see below), whose sum is σ = 17389440. Its totient is φ = 6955200.

The previous prime is 11085253. The next prime is 11085313. The reversal of 11085309 is 90358011.

It is not a de Polignac number, because 11085309 - 2⁹ = 11084797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11085329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11617 + ... + 12534.

It is an arithmetic number, because the mean of its divisors is an integer number (1086840).

Almost surely, 2^11085309 is an apocalyptic number.

It is an amenable number.

11085309 is a deficient number, since it is larger than the sum of its proper divisors (6304131).

11085309 is a wasteful number, since it uses less digits than its factorization.

11085309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24177 (or 24171 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 11085309 is about 3329.4607671513. The cubic root of 11085309 is about 222.9714549854.

The spelling of 11085309 in words is "eleven million, eighty-five thousand, three hundred nine".