3996846281 has 2 divisors, whose sum is σ = 3996846282. Its totient is φ = 3996846280.

The previous prime is 3996846257. The next prime is 3996846311. The reversal of 3996846281 is 1826486993.

It is a happy number.

3996846281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3003588025 + 993258256 = 54805^2 + 31516^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996846281 - 2¹⁰ = 3996845257 is a prime.

It is a super-2 number, since 2×3996846281² = 31949560387887061922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3996846881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998423140 + 1998423141.

It is an arithmetic number, because the mean of its divisors is an integer number (1998423141).

Almost surely, 2^3996846281 is an apocalyptic number.

It is an amenable number.

3996846281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996846281 is an equidigital number, since it uses as much as digits as its factorization.

3996846281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The square root of 3996846281 is about 63220.6159492297. The cubic root of 3996846281 is about 1586.9837575417.

The spelling of 3996846281 in words is "three billion, nine hundred ninety-six million, eight hundred forty-six thousand, two hundred eighty-one".