11539869 has 16 divisors (see below), whose sum is σ = 17072640. Its totient is φ = 6874160.

The previous prime is 11539861. The next prime is 11539903. The reversal of 11539869 is 96893511.

11539869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11539869 - 2³ = 11539861 is a prime.

It is a super-2 number, since 2×11539869² = 266337153074322, 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 11539869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11539861) 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 15 ways as a sum of consecutive naturals, for example, 1017 + ... + 4910.

It is an arithmetic number, because the mean of its divisors is an integer number (1067040).

Almost surely, 2^11539869 is an apocalyptic number.

It is an amenable number.

11539869 is a deficient number, since it is larger than the sum of its proper divisors (5532771).

11539869 is a wasteful number, since it uses less digits than its factorization.

11539869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000.

The product of its digits is 58320, while the sum is 42.

The square root of 11539869 is about 3397.0382688454. The cubic root of 11539869 is about 225.9784157213.

The spelling of 11539869 in words is "eleven million, five hundred thirty-nine thousand, eight hundred sixty-nine".