12396381 has 8 divisors (see below), whose sum is σ = 16570560. Its totient is φ = 8243232.

The previous prime is 12396361. The next prime is 12396389. The reversal of 12396381 is 18369321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12396381 - 2⁹ = 12395869 is a prime.

It is a super-2 number, since 2×12396381² = 307340523794322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12396389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3825 + ... + 6278.

It is an arithmetic number, because the mean of its divisors is an integer number (2071320).

Almost surely, 2^12396381 is an apocalyptic number.

It is an amenable number.

12396381 is a deficient number, since it is larger than the sum of its proper divisors (4174179).

12396381 is a wasteful number, since it uses less digits than its factorization.

12396381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515.

The product of its digits is 7776, while the sum is 33.

The square root of 12396381 is about 3520.8494713634. The cubic root of 12396381 is about 231.4363857944.

The spelling of 12396381 in words is "twelve million, three hundred ninety-six thousand, three hundred eighty-one".