11987994 has 8 divisors (see below), whose sum is σ = 23976000. Its totient is φ = 3995996.

The previous prime is 11987981. The next prime is 11988029. The reversal of 11987994 is 49978911.

It is a sphenic number, since it is the product of 3 distinct primes.

11987994 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 998994 + ... + 999005.

It is an arithmetic number, because the mean of its divisors is an integer number (2997000).

Almost surely, 2^11987994 is an apocalyptic number.

11987994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11987994 is a wasteful number, since it uses less digits than its factorization.

11987994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998004.

The product of its digits is 163296, while the sum is 48.

The square root of 11987994 is about 3462.3682646420. The cubic root of 11987994 is about 228.8664705930.

The spelling of 11987994 in words is "eleven million, nine hundred eighty-seven thousand, nine hundred ninety-four".