11989145 has 8 divisors (see below), whose sum is σ = 16442304. Its totient is φ = 8221104.

The previous prime is 11989129. The next prime is 11989163. The reversal of 11989145 is 54198911.

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

It is a cyclic number.

It is not a de Polignac number, because 11989145 - 2⁴ = 11989129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11989099 and 11989108.

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 7 ways as a sum of consecutive naturals, for example, 171239 + ... + 171308.

It is an arithmetic number, because the mean of its divisors is an integer number (2055288).

Almost surely, 2^11989145 is an apocalyptic number.

It is an amenable number.

11989145 is a deficient number, since it is larger than the sum of its proper divisors (4453159).

11989145 is an equidigital number, since it uses as much as digits as its factorization.

11989145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342559.

The product of its digits is 12960, while the sum is 38.

The square root of 11989145 is about 3462.5344763627. The cubic root of 11989145 is about 228.8737950566.

The spelling of 11989145 in words is "eleven million, nine hundred eighty-nine thousand, one hundred forty-five".