11447689 has 12 divisors (see below), whose sum is σ = 12928132. Its totient is φ = 10121760.

The previous prime is 11447677. The next prime is 11447693. The reversal of 11447689 is 98674411.

It can be written as a sum of positive squares in 2 ways, for example, as 7868025 + 3579664 = 2805^2 + 1892^2 .

It is not a de Polignac number, because 11447689 - 2⁷ = 11447561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11447669) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3199 + ... + 5755.

Almost surely, 2^11447689 is an apocalyptic number.

It is an amenable number.

11447689 is a deficient number, since it is larger than the sum of its proper divisors (1480443).

11447689 is a wasteful number, since it uses less digits than its factorization.

11447689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2605 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 11447689 is about 3383.4433643849. The cubic root of 11447689 is about 225.3751043458.

The spelling of 11447689 in words is "eleven million, four hundred forty-seven thousand, six hundred eighty-nine".