12389858 has 16 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 5596176.

The previous prime is 12389833. The next prime is 12389879. The reversal of 12389858 is 85898321.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 3848 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^12389858 is an apocalyptic number.

12389858 is a deficient number, since it is larger than the sum of its proper divisors (8052382).

12389858 is a wasteful number, since it uses less digits than its factorization.

12389858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10201.

The product of its digits is 138240, while the sum is 44.

The square root of 12389858 is about 3519.9230105217. The cubic root of 12389858 is about 231.3957845787.

The spelling of 12389858 in words is "twelve million, three hundred eighty-nine thousand, eight hundred fifty-eight".