11989662 has 8 divisors (see below), whose sum is σ = 23979336. Its totient is φ = 3996552.

The previous prime is 11989657. The next prime is 11989669. The reversal of 11989662 is 26698911.

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

11989662 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999133 + ... + 999144.

It is an arithmetic number, because the mean of its divisors is an integer number (2997417).

Almost surely, 2^11989662 is an apocalyptic number.

11989662 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.

11989662 is a wasteful number, since it uses less digits than its factorization.

11989662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998282.

The product of its digits is 46656, while the sum is 42.

The square root of 11989662 is about 3462.6091318542. The cubic root of 11989662 is about 228.8770848673.

It can be divided in two parts, 1198966 and 2, that multiplied together give a palindrome (2397932).

The spelling of 11989662 in words is "eleven million, nine hundred eighty-nine thousand, six hundred sixty-two".