11147986 has 4 divisors (see below), whose sum is σ = 16721982. Its totient is φ = 5573992.

The previous prime is 11147953. The next prime is 11148001. The reversal of 11147986 is 68974111.

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., 9418761 + 1729225 = 3069^2 + 1315^2 .

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 as a sum of consecutive naturals, namely, 2786995 + ... + 2786998.

Almost surely, 2^11147986 is an apocalyptic number.

11147986 is a deficient number, since it is larger than the sum of its proper divisors (5573996).

11147986 is an equidigital number, since it uses as much as digits as its factorization.

11147986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573995.

The product of its digits is 12096, while the sum is 37.

The square root of 11147986 is about 3338.8599850847. The cubic root of 11147986 is about 223.3908967730.

The spelling of 11147986 in words is "eleven million, one hundred forty-seven thousand, nine hundred eighty-six".