12444661 has 2 divisors, whose sum is σ = 12444662. Its totient is φ = 12444660.

The previous prime is 12444659. The next prime is 12444701. The reversal of 12444661 is 16644421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6922161 + 5522500 = 2631^2 + 2350^2 .

It is a cyclic number.

It is not a de Polignac number, because 12444661 - 2¹ = 12444659 is a prime.

Together with 12444659, it forms a pair of twin primes.

It is equal to p₈₁₅₃₄₇ and since 12444661 and 815347 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12444611) 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 as a sum of consecutive naturals, namely, 6222330 + 6222331.

It is an arithmetic number, because the mean of its divisors is an integer number (6222331).

Almost surely, 2^12444661 is an apocalyptic number.

It is an amenable number.

12444661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12444661 is an equidigital number, since it uses as much as digits as its factorization.

12444661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 12444661 is about 3527.6991084842. The cubic root of 12444661 is about 231.7364538529.

The spelling of 12444661 in words is "twelve million, four hundred forty-four thousand, six hundred sixty-one".