16944281 has 2 divisors, whose sum is σ = 16944282. Its totient is φ = 16944280.

The previous prime is 16944247. The next prime is 16944287. The reversal of 16944281 is 18244961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16679056 + 265225 = 4084^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 16944281 - 2⁶ = 16944217 is a prime.

It is a super-2 number, since 2×16944281² = 574217317213922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16944287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8472140 + 8472141.

It is an arithmetic number, because the mean of its divisors is an integer number (8472141).

Almost surely, 2^16944281 is an apocalyptic number.

It is an amenable number.

16944281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16944281 is an equidigital number, since it uses as much as digits as its factorization.

16944281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 16944281 is about 4116.3431586786. The cubic root of 16944281 is about 256.8469315159.

The spelling of 16944281 in words is "sixteen million, nine hundred forty-four thousand, two hundred eighty-one".