12159397 has 2 divisors, whose sum is σ = 12159398. Its totient is φ = 12159396.

The previous prime is 12159383. The next prime is 12159401. The reversal of 12159397 is 79395121.

12159397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12047841 + 111556 = 3471^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 12159397 - 2¹⁵ = 12126629 is a prime.

It is a super-3 number, since 3×12159397³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12159307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079698 + 6079699.

It is an arithmetic number, because the mean of its divisors is an integer number (6079699).

Almost surely, 2^12159397 is an apocalyptic number.

It is an amenable number.

12159397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12159397 is an equidigital number, since it uses as much as digits as its factorization.

12159397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 37.

The square root of 12159397 is about 3487.0326927059. The cubic root of 12159397 is about 229.9520820150.

The spelling of 12159397 in words is "twelve million, one hundred fifty-nine thousand, three hundred ninety-seven".