12159858 has 16 divisors (see below), whose sum is σ = 24393600. Its totient is φ = 4040976.

The previous prime is 12159857. The next prime is 12159863. The reversal of 12159858 is 85895121.

It is not an unprimeable number, because it can be changed into a prime (12159853) 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 7 ways as a sum of consecutive naturals, for example, 810 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^12159858 is an apocalyptic number.

12159858 is an abundant number, since it is smaller than the sum of its proper divisors (12233742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12159858 is a wasteful number, since it uses less digits than its factorization.

12159858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161.

The product of its digits is 28800, while the sum is 39.

The square root of 12159858 is about 3487.0987941267. The cubic root of 12159858 is about 229.9549880409.

The spelling of 12159858 in words is "twelve million, one hundred fifty-nine thousand, eight hundred fifty-eight".