12859538 has 4 divisors (see below), whose sum is σ = 19289310. Its totient is φ = 6429768.

The previous prime is 12859487. The next prime is 12859543. The reversal of 12859538 is 83595821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 1723969 = 3337^2 + 1313^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12859495 and 12859504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214883 + ... + 3214886.

Almost surely, 2^12859538 is an apocalyptic number.

12859538 is a deficient number, since it is larger than the sum of its proper divisors (6429772).

12859538 is an equidigital number, since it uses as much as digits as its factorization.

12859538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429771.

The product of its digits is 86400, while the sum is 41.

The square root of 12859538 is about 3586.0197991645. The cubic root of 12859538 is about 234.2835460197.

The spelling of 12859538 in words is "twelve million, eight hundred fifty-nine thousand, five hundred thirty-eight".