12191094 has 32 divisors (see below), whose sum is σ = 27542880. Its totient is φ = 3996000.

The previous prime is 12191089. The next prime is 12191117. The reversal of 12191094 is 49019121.

12191094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (860715).

Almost surely, 2^12191094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12191094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13771440).

12191094 is an abundant number, since it is smaller than the sum of its proper divisors (15351786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12191094 is a wasteful number, since it uses less digits than its factorization.

12191094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 12191094 is about 3491.5747163708. The cubic root of 12191094 is about 230.1517209403.

The spelling of 12191094 in words is "twelve million, one hundred ninety-one thousand, ninety-four".