12286961 has 4 divisors (see below), whose sum is σ = 12305892. Its totient is φ = 12268032.

The previous prime is 12286957. The next prime is 12286969. The reversal of 12286961 is 16968221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16968221 = 631 ⋅26891.

It can be written as a sum of positive squares in 2 ways, for example, as 3876961 + 8410000 = 1969^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 12286961 - 2² = 12286957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12286969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8456 + ... + 9801.

It is an arithmetic number, because the mean of its divisors is an integer number (3076473).

Almost surely, 2^12286961 is an apocalyptic number.

It is an amenable number.

12286961 is a deficient number, since it is larger than the sum of its proper divisors (18931).

12286961 is an equidigital number, since it uses as much as digits as its factorization.

12286961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18930.

The product of its digits is 10368, while the sum is 35.

The square root of 12286961 is about 3505.2761660103. The cubic root of 12286961 is about 230.7534271713.

The spelling of 12286961 in words is "twelve million, two hundred eighty-six thousand, nine hundred sixty-one".