11159887 has 4 divisors (see below), whose sum is σ = 11170720. Its totient is φ = 11149056.

The previous prime is 11159881. The next prime is 11159921. The reversal of 11159887 is 78895111.

11159887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11159887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11159881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3687 + ... + 5992.

It is an arithmetic number, because the mean of its divisors is an integer number (2792680).

Almost surely, 2^11159887 is an apocalyptic number.

11159887 is a deficient number, since it is larger than the sum of its proper divisors (10833).

11159887 is an equidigital number, since it uses as much as digits as its factorization.

11159887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832.

The product of its digits is 20160, while the sum is 40.

The square root of 11159887 is about 3340.6417048226. The cubic root of 11159887 is about 223.4703619360.

The spelling of 11159887 in words is "eleven million, one hundred fifty-nine thousand, eight hundred eighty-seven".