11819705 has 4 divisors (see below), whose sum is σ = 14183652. Its totient is φ = 9455760.

The previous prime is 11819699. The next prime is 11819707. The reversal of 11819705 is 50791811.

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 1605289 + 10214416 = 1267^2 + 3196^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11819705 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11819707) 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, 1181966 + ... + 1181975.

It is an arithmetic number, because the mean of its divisors is an integer number (3545913).

Almost surely, 2^11819705 is an apocalyptic number.

It is an amenable number.

11819705 is a deficient number, since it is larger than the sum of its proper divisors (2363947).

11819705 is an equidigital number, since it uses as much as digits as its factorization.

11819705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363946.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11819705 is about 3437.9797846991. The cubic root of 11819705 is about 227.7904674447.

The spelling of 11819705 in words is "eleven million, eight hundred nineteen thousand, seven hundred five".