11690889 has 8 divisors (see below), whose sum is σ = 17814720. Its totient is φ = 6680496.

The previous prime is 11690881. The next prime is 11690891. The reversal of 11690889 is 98809611.

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

It is not a de Polignac number, because 11690889 - 2³ = 11690881 is a prime.

It is a super-2 number, since 2×11690889² = 273353771220642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11690889.

It is not an unprimeable number, because it can be changed into a prime (11690881) 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 7 ways as a sum of consecutive naturals, for example, 278334 + ... + 278375.

It is an arithmetic number, because the mean of its divisors is an integer number (2226840).

Almost surely, 2^11690889 is an apocalyptic number.

It is an amenable number.

11690889 is a deficient number, since it is larger than the sum of its proper divisors (6123831).

11690889 is an equidigital number, since it uses as much as digits as its factorization.

11690889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556719.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 11690889 is about 3419.1942033175. The cubic root of 11690889 is about 226.9599248732.

It can be divided in two parts, 11 and 690889, that added together give a triangular number (690900 = T₁₁₇₅).

The spelling of 11690889 in words is "eleven million, six hundred ninety thousand, eight hundred eighty-nine".