13206859 has 4 divisors (see below), whose sum is σ = 13487904. Its totient is φ = 12925816.

The previous prime is 13206847. The next prime is 13206871. The reversal of 13206859 is 95860231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95860231 = 503 ⋅190577.

It is an interprime number because it is at equal distance from previous prime (13206847) and next prime (13206871).

It is a cyclic number.

It is not a de Polignac number, because 13206859 - 2⁷ = 13206731 is a prime.

It is a super-3 number, since 3×13206859³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13206889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140452 + ... + 140545.

It is an arithmetic number, because the mean of its divisors is an integer number (3371976).

Almost surely, 2^13206859 is an apocalyptic number.

13206859 is a deficient number, since it is larger than the sum of its proper divisors (281045).

13206859 is an equidigital number, since it uses as much as digits as its factorization.

13206859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281044.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 13206859 is about 3634.1242411343. The cubic root of 13206859 is about 236.3740775780.

The spelling of 13206859 in words is "thirteen million, two hundred six thousand, eight hundred fifty-nine".