11709893 has 4 divisors (see below), whose sum is σ = 12610668. Its totient is φ = 10809120.

The previous prime is 11709883. The next prime is 11709913. The reversal of 11709893 is 39890711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 5166529 = 2558^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 11709893 - 2¹² = 11705797 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 (11709853) 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 3 ways as a sum of consecutive naturals, for example, 450368 + ... + 450393.

It is an arithmetic number, because the mean of its divisors is an integer number (3152667).

Almost surely, 2^11709893 is an apocalyptic number.

11709893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11709893 is a deficient number, since it is larger than the sum of its proper divisors (900775).

11709893 is an equidigital number, since it uses as much as digits as its factorization.

11709893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900774.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11709893 is about 3421.9720922299. The cubic root of 11709893 is about 227.0828357273.

The spelling of 11709893 in words is "eleven million, seven hundred nine thousand, eight hundred ninety-three".