7944281 has 2 divisors, whose sum is σ = 7944282. Its totient is φ = 7944280.

The previous prime is 7944259. The next prime is 7944301. The reversal of 7944281 is 1824497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5569600 + 2374681 = 2360^2 + 1541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7944281 is a prime.

It is a super-2 number, since 2×7944281² = 126223201213922, 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 (7944221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972140 + 3972141.

It is an arithmetic number, because the mean of its divisors is an integer number (3972141).

Almost surely, 2^7944281 is an apocalyptic number.

It is an amenable number.

7944281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7944281 is an equidigital number, since it uses as much as digits as its factorization.

7944281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 7944281 is about 2818.5600933810. The cubic root of 7944281 is about 199.5345928209.

The spelling of 7944281 in words is "seven million, nine hundred forty-four thousand, two hundred eighty-one".