11395809 has 10 divisors (see below), whose sum is σ = 17023490. Its totient is φ = 7597152.

The previous prime is 11395807. The next prime is 11395823. The reversal of 11395809 is 90859311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 5184 = 3375^2 + 72^2 .

It is not a de Polignac number, because 11395809 - 2¹ = 11395807 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 (11395807) 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 9 ways as a sum of consecutive naturals, for example, 70264 + ... + 70425.

It is an arithmetic number, because the mean of its divisors is an integer number (1702349).

Almost surely, 2^11395809 is an apocalyptic number.

It is an amenable number.

11395809 is a deficient number, since it is larger than the sum of its proper divisors (5627681).

11395809 is an equidigital number, since it uses as much as digits as its factorization.

11395809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140701 (or 140692 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 11395809 is about 3375.7679126385. The cubic root of 11395809 is about 225.0341281565.

The spelling of 11395809 in words is "eleven million, three hundred ninety-five thousand, eight hundred nine".