12159399 has 24 divisors (see below), whose sum is σ = 19005168. Its totient is φ = 6894720.

The previous prime is 12159397. The next prime is 12159401. The reversal of 12159399 is 99395121.

It is an interprime number because it is at equal distance from previous prime (12159397) and next prime (12159401).

It is not a de Polignac number, because 12159399 - 2¹ = 12159397 is a prime.

It is a super-3 number, since 3×12159399³ (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 (12159397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26379 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (791882).

Almost surely, 2^12159399 is an apocalyptic number.

12159399 is a deficient number, since it is larger than the sum of its proper divisors (6845769).

12159399 is a wasteful number, since it uses less digits than its factorization.

12159399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 648 counting only the distinct ones).

The product of its digits is 21870, while the sum is 39.

The square root of 12159399 is about 3487.0329794827. The cubic root of 12159399 is about 229.9520946226.

The spelling of 12159399 in words is "twelve million, one hundred fifty-nine thousand, three hundred ninety-nine".