3996281 has 2 divisors, whose sum is σ = 3996282. Its totient is φ = 3996280.

The previous prime is 3996277. The next prime is 3996283. The reversal of 3996281 is 1826993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 60025 = 1984^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996281 - 2² = 3996277 is a prime.

It is a super-2 number, since 2×3996281² = 31940523661922, which contains 22 as substring.

Together with 3996283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3996283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998140 + 1998141.

It is an arithmetic number, because the mean of its divisors is an integer number (1998141).

Almost surely, 2^3996281 is an apocalyptic number.

It is an amenable number.

3996281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996281 is an equidigital number, since it uses as much as digits as its factorization.

3996281 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3996281 is about 1999.0700337907. The cubic root of 3996281 is about 158.6908937379.

The spelling of 3996281 in words is "three million, nine hundred ninety-six thousand, two hundred eighty-one".