12391416 has 48 divisors (see below), whose sum is σ = 34140600. Its totient is φ = 4059072.

The previous prime is 12391403. The next prime is 12391427. The reversal of 12391416 is 61419321.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12391416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2790 + ... + 5706.

Almost surely, 2^12391416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12391416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17070300).

12391416 is an abundant number, since it is smaller than the sum of its proper divisors (21749184).

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

12391416 is a wasteful number, since it uses less digits than its factorization.

12391416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2981 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 12391416 is about 3520.1443152235. The cubic root of 12391416 is about 231.4054833588.

The spelling of 12391416 in words is "twelve million, three hundred ninety-one thousand, four hundred sixteen".