12111489 has 24 divisors (see below), whose sum is σ = 19160232. Its totient is φ = 7326720.

The previous prime is 12111479. The next prime is 12111499. The reversal of 12111489 is 98411121.

It is an interprime number because it is at equal distance from previous prime (12111479) and next prime (12111499).

It can be written as a sum of positive squares in 4 ways, for example, as 435600 + 11675889 = 660^2 + 3417^2 .

It is not a de Polignac number, because 12111489 - 2¹⁷ = 11980417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111419) 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 23 ways as a sum of consecutive naturals, for example, 6289 + ... + 7985.

It is an arithmetic number, because the mean of its divisors is an integer number (798343).

Almost surely, 2^12111489 is an apocalyptic number.

It is an amenable number.

12111489 is a deficient number, since it is larger than the sum of its proper divisors (7048743).

12111489 is a wasteful number, since it uses less digits than its factorization.

12111489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1774 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 12111489 is about 3480.1564619999. The cubic root of 12111489 is about 229.6496809314.

The spelling of 12111489 in words is "twelve million, one hundred eleven thousand, four hundred eighty-nine".