11799985 has 4 divisors (see below), whose sum is σ = 14159988. Its totient is φ = 9439984.

The previous prime is 11799979. The next prime is 11800001. The reversal of 11799985 is 58999711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58999711 = 47 ⋅1255313.

It can be written as a sum of positive squares in 2 ways, for example, as 4809249 + 6990736 = 2193^2 + 2644^2 .

It is a cyclic number.

It is not a de Polignac number, because 11799985 - 2⁷ = 11799857 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1179994 + ... + 1180003.

It is an arithmetic number, because the mean of its divisors is an integer number (3539997).

Almost surely, 2^11799985 is an apocalyptic number.

It is an amenable number.

11799985 is a deficient number, since it is larger than the sum of its proper divisors (2360003).

11799985 is an equidigital number, since it uses as much as digits as its factorization.

11799985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360002.

The product of its digits is 204120, while the sum is 49.

The square root of 11799985 is about 3435.1106241284. The cubic root of 11799985 is about 227.6637150285.

The spelling of 11799985 in words is "eleven million, seven hundred ninety-nine thousand, nine hundred eighty-five".