12406859 has 4 divisors (see below), whose sum is σ = 12592104. Its totient is φ = 12221616.

The previous prime is 12406847. The next prime is 12406883. The reversal of 12406859 is 95860421.

12406859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95860421 = 991 ⋅96731.

It is a cyclic number.

It is not a de Polignac number, because 12406859 - 2⁴ = 12406843 is a prime.

It is a super-3 number, since 3×12406859³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12406819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92522 + ... + 92655.

It is an arithmetic number, because the mean of its divisors is an integer number (3148026).

Almost surely, 2^12406859 is an apocalyptic number.

12406859 is a deficient number, since it is larger than the sum of its proper divisors (185245).

12406859 is an equidigital number, since it uses as much as digits as its factorization.

12406859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185244.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12406859 is about 3522.3371502456. The cubic root of 12406859 is about 231.5015743774.

The spelling of 12406859 in words is "twelve million, four hundred six thousand, eight hundred fifty-nine".