11445309 has 6 divisors (see below), whose sum is σ = 16532126. Its totient is φ = 7630200.

The previous prime is 11445289. The next prime is 11445359. The reversal of 11445309 is 90354411.

It can be written as a sum of positive squares in only one way, i.e., 11088900 + 356409 = 3330^2 + 597^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11445309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445359) 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 5 ways as a sum of consecutive naturals, for example, 635842 + ... + 635859.

Almost surely, 2^11445309 is an apocalyptic number.

It is an amenable number.

11445309 is a deficient number, since it is larger than the sum of its proper divisors (5086817).

11445309 is a wasteful number, since it uses less digits than its factorization.

11445309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271707 (or 1271704 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 11445309 is about 3383.0916334028. The cubic root of 11445309 is about 225.3594846015.

The spelling of 11445309 in words is "eleven million, four hundred forty-five thousand, three hundred nine".