9963281 has 2 divisors, whose sum is σ = 9963282. Its totient is φ = 9963280.

The previous prime is 9963263. The next prime is 9963299. The reversal of 9963281 is 1823699.

It is a balanced prime because it is at equal distance from previous prime (9963263) and next prime (9963299).

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 3936256 = 2455^2 + 1984^2 .

It is a cyclic number.

It is not a de Polignac number, because 9963281 - 2¹⁴ = 9946897 is a prime.

It is a super-2 number, since 2×9963281² = 198533936569922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9963251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4981640 + 4981641.

It is an arithmetic number, because the mean of its divisors is an integer number (4981641).

Almost surely, 2^9963281 is an apocalyptic number.

It is an amenable number.

9963281 is a deficient number, since it is larger than the sum of its proper divisors (1).

9963281 is an equidigital number, since it uses as much as digits as its factorization.

9963281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 9963281 is about 3156.4665371266. The cubic root of 9963281 is about 215.1794499639.

The spelling of 9963281 in words is "nine million, nine hundred sixty-three thousand, two hundred eighty-one".