12091384 has 8 divisors (see below), whose sum is σ = 22671360. Its totient is φ = 6045688.

The previous prime is 12091381. The next prime is 12091411. The reversal of 12091384 is 48319021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×12091384³ (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 (12091381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 755704 + ... + 755719.

It is an arithmetic number, because the mean of its divisors is an integer number (2833920).

Almost surely, 2^12091384 is an apocalyptic number.

It is an amenable number.

12091384 is a deficient number, since it is larger than the sum of its proper divisors (10579976).

12091384 is a wasteful number, since it uses less digits than its factorization.

12091384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511429 (or 1511425 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12091384 is about 3477.2667427162. The cubic root of 12091384 is about 229.5225381833.

The spelling of 12091384 in words is "twelve million, ninety-one thousand, three hundred eighty-four".