11489569 has 24 divisors (see below), whose sum is σ = 15254568. Its totient is φ = 8547840.

The previous prime is 11489567. The next prime is 11489579. The reversal of 11489569 is 96598411.

It can be written as a sum of positive squares in 4 ways, for example, as 1960000 + 9529569 = 1400^2 + 3087^2 .

It is not a de Polignac number, because 11489569 - 2¹ = 11489567 is a prime.

It is a super-2 number, since 2×11489569² = 264020391611522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11489567) 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, 10299 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (635607).

Almost surely, 2^11489569 is an apocalyptic number.

It is an amenable number.

11489569 is a deficient number, since it is larger than the sum of its proper divisors (3764999).

11489569 is a wasteful number, since it uses less digits than its factorization.

11489569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1098 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 11489569 is about 3389.6266756090. The cubic root of 11489569 is about 225.6496058216.

The spelling of 11489569 in words is "eleven million, four hundred eighty-nine thousand, five hundred sixty-nine".