12159899 has 2 divisors, whose sum is σ = 12159900. Its totient is φ = 12159898.

The previous prime is 12159881. The next prime is 12159911. The reversal of 12159899 is 99895121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12159899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12159809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079949 + 6079950.

It is an arithmetic number, because the mean of its divisors is an integer number (6079950).

Almost surely, 2^12159899 is an apocalyptic number.

12159899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12159899 is an equidigital number, since it uses as much as digits as its factorization.

12159899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 44.

The square root of 12159899 is about 3487.1046729343. The cubic root of 12159899 is about 229.9552464909.

The spelling of 12159899 in words is "twelve million, one hundred fifty-nine thousand, eight hundred ninety-nine".