11809396 has 18 divisors (see below), whose sum is σ = 21607922. Its totient is φ = 5646960.

The previous prime is 11809379. The next prime is 11809453. The reversal of 11809396 is 69390811.

It can be written as a sum of positive squares in only one way, i.e., 9217296 + 2592100 = 3036^2 + 1610^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 675 + ... + 4906.

Almost surely, 2^11809396 is an apocalyptic number.

It is an amenable number.

11809396 is a deficient number, since it is larger than the sum of its proper divisors (9798526).

11809396 is a wasteful number, since it uses less digits than its factorization.

11809396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631 (or 5606 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 11809396 is about 3436.4801759940. The cubic root of 11809396 is about 227.7242228422.

The spelling of 11809396 in words is "eleven million, eight hundred nine thousand, three hundred ninety-six".