11669989 has 4 divisors (see below), whose sum is σ = 11681280. Its totient is φ = 11658700.

The previous prime is 11669969. The next prime is 11670011. The reversal of 11669989 is 98996611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11669989 - 2¹⁵ = 11637221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11669929) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3919 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (2920320).

Almost surely, 2^11669989 is an apocalyptic number.

It is an amenable number.

11669989 is a deficient number, since it is larger than the sum of its proper divisors (11291).

11669989 is a wasteful number, since it uses less digits than its factorization.

11669989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11290.

The product of its digits is 209952, while the sum is 49.

The square root of 11669989 is about 3416.1365605022. The cubic root of 11669989 is about 226.8245975000.

The spelling of 11669989 in words is "eleven million, six hundred sixty-nine thousand, nine hundred eighty-nine".