11944861 has 2 divisors, whose sum is σ = 11944862. Its totient is φ = 11944860.

The previous prime is 11944859. The next prime is 11944873. The reversal of 11944861 is 16844911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7257636 + 4687225 = 2694^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 11944861 - 2¹ = 11944859 is a prime.

Together with 11944859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11944811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5972430 + 5972431.

It is an arithmetic number, because the mean of its divisors is an integer number (5972431).

Almost surely, 2^11944861 is an apocalyptic number.

It is an amenable number.

11944861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11944861 is an equidigital number, since it uses as much as digits as its factorization.

11944861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 11944861 is about 3456.1338226406. The cubic root of 11944861 is about 228.5916522842.

The spelling of 11944861 in words is "eleven million, nine hundred forty-four thousand, eight hundred sixty-one".