12084891 has 16 divisors (see below), whose sum is σ = 19832064. Its totient is φ = 6374304.

The previous prime is 12084889. The next prime is 12084923. The reversal of 12084891 is 19848021.

It is not a de Polignac number, because 12084891 - 2¹ = 12084889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12084811) 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 15 ways as a sum of consecutive naturals, for example, 21861 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (1239504).

Almost surely, 2^12084891 is an apocalyptic number.

12084891 is a deficient number, since it is larger than the sum of its proper divisors (7747173).

12084891 is a wasteful number, since it uses less digits than its factorization.

12084891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44290.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 12084891 is about 3476.3329817496. The cubic root of 12084891 is about 229.4814467561.

The spelling of 12084891 in words is "twelve million, eighty-four thousand, eight hundred ninety-one".