11967986 has 16 divisors (see below), whose sum is σ = 19301760. Its totient is φ = 5547600.

The previous prime is 11967979. The next prime is 11967997. The reversal of 11967986 is 68976911.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 11967986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (1206360).

Almost surely, 2^11967986 is an apocalyptic number.

11967986 is a deficient number, since it is larger than the sum of its proper divisors (7333774).

11967986 is a wasteful number, since it uses less digits than its factorization.

11967986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769.

The product of its digits is 163296, while the sum is 47.

The square root of 11967986 is about 3459.4777062441. The cubic root of 11967986 is about 228.7390734029.

The spelling of 11967986 in words is "eleven million, nine hundred sixty-seven thousand, nine hundred eighty-six".