11887109 has 8 divisors (see below), whose sum is σ = 12856032. Its totient is φ = 10926000.

The previous prime is 11887091. The next prime is 11887111. The reversal of 11887109 is 90178811.

11887109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11887109 - 2¹⁶ = 11821573 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 (11884109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (1607004).

Almost surely, 2^11887109 is an apocalyptic number.

It is an amenable number.

11887109 is a deficient number, since it is larger than the sum of its proper divisors (968923).

11887109 is a wasteful number, since it uses less digits than its factorization.

11887109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 4032, while the sum is 35.

The square root of 11887109 is about 3447.7686987384. The cubic root of 11887109 is about 228.2226523565. Note that the first 3 decimals are identical.

The spelling of 11887109 in words is "eleven million, eight hundred eighty-seven thousand, one hundred nine".