12156393 has 8 divisors (see below), whose sum is σ = 16225056. Its totient is φ = 8096000.

The previous prime is 12156383. The next prime is 12156439. The reversal of 12156393 is 39365121.

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

It is a cyclic number.

It is not a de Polignac number, because 12156393 - 2⁶ = 12156329 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12156393.

It is not an unprimeable number, because it can be changed into a prime (12156323) 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, 3538 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (2028132).

Almost surely, 2^12156393 is an apocalyptic number.

It is an amenable number.

12156393 is a deficient number, since it is larger than the sum of its proper divisors (4068663).

12156393 is a wasteful number, since it uses less digits than its factorization.

12156393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135.

The product of its digits is 4860, while the sum is 30.

The square root of 12156393 is about 3486.6019273786. The cubic root of 12156393 is about 229.9331437692.

The spelling of 12156393 in words is "twelve million, one hundred fifty-six thousand, three hundred ninety-three".