11823986 has 4 divisors (see below), whose sum is σ = 17735982. Its totient is φ = 5911992.

The previous prime is 11823971. The next prime is 11823991. The reversal of 11823986 is 68932811.

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

It can be written as a sum of positive squares in only one way, i.e., 7392961 + 4431025 = 2719^2 + 2105^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2955995 + ... + 2955998.

Almost surely, 2^11823986 is an apocalyptic number.

11823986 is a deficient number, since it is larger than the sum of its proper divisors (5911996).

11823986 is an equidigital number, since it uses as much as digits as its factorization.

11823986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911995.

The product of its digits is 20736, while the sum is 38.

The square root of 11823986 is about 3438.6023323438. The cubic root of 11823986 is about 227.8179654035.

The spelling of 11823986 in words is "eleven million, eight hundred twenty-three thousand, nine hundred eighty-six".