12091187 has 8 divisors (see below), whose sum is σ = 12546240. Its totient is φ = 11643840.

The previous prime is 12091181. The next prime is 12091241. The reversal of 12091187 is 78119021.

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 12091187 - 2⁴ = 12091171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12091181) 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, 1373 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (1568280).

Almost surely, 2^12091187 is an apocalyptic number.

12091187 is a deficient number, since it is larger than the sum of its proper divisors (455053).

12091187 is an equidigital number, since it uses as much as digits as its factorization.

12091187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 12091187 is about 3477.2384157547. The cubic root of 12091187 is about 229.5212916708.

The spelling of 12091187 in words is "twelve million, ninety-one thousand, one hundred eighty-seven".