12093991 has 16 divisors (see below), whose sum is σ = 14966784. Its totient is φ = 9516384.

The previous prime is 12093989. The next prime is 12094001. The reversal of 12093991 is 19939021.

It is a cyclic number.

It is not a de Polignac number, because 12093991 - 2¹ = 12093989 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12093901) 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, 31386 + ... + 31768.

It is an arithmetic number, because the mean of its divisors is an integer number (935424).

Almost surely, 2^12093991 is an apocalyptic number.

12093991 is a deficient number, since it is larger than the sum of its proper divisors (2872793).

12093991 is a wasteful number, since it uses less digits than its factorization.

12093991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 12093991 is about 3477.6415859027. The cubic root of 12093991 is about 229.5390326353.

The spelling of 12093991 in words is "twelve million, ninety-three thousand, nine hundred ninety-one".