12191384 has 16 divisors (see below), whose sum is σ = 23035320. Its totient is φ = 6048640.

The previous prime is 12191381. The next prime is 12191419. The reversal of 12191384 is 48319121.

It is a super-3 number, since 3×12191384³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4769 + ... + 6864.

Almost surely, 2^12191384 is an apocalyptic number.

It is an amenable number.

12191384 is a deficient number, since it is larger than the sum of its proper divisors (10843936).

12191384 is a wasteful number, since it uses less digits than its factorization.

12191384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11770 (or 11766 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 12191384 is about 3491.6162446638. The cubic root of 12191384 is about 230.1535458646.

The spelling of 12191384 in words is "twelve million, one hundred ninety-one thousand, three hundred eighty-four".