12259861 has 8 divisors (see below), whose sum is σ = 12749184. Its totient is φ = 11779680.

The previous prime is 12259853. The next prime is 12259879. The reversal of 12259861 is 16895221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12259861 - 2³ = 12259853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259061) 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 7 ways as a sum of consecutive naturals, for example, 516 + ... + 4978.

It is an arithmetic number, because the mean of its divisors is an integer number (1593648).

Almost surely, 2^12259861 is an apocalyptic number.

It is an amenable number.

12259861 is a deficient number, since it is larger than the sum of its proper divisors (489323).

12259861 is an equidigital number, since it uses as much as digits as its factorization.

12259861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571.

The product of its digits is 8640, while the sum is 34.

The square root of 12259861 is about 3501.4084309032. The cubic root of 12259861 is about 230.5836531317.

The spelling of 12259861 in words is "twelve million, two hundred fifty-nine thousand, eight hundred sixty-one".