3996096821 has 2 divisors, whose sum is σ = 3996096822. Its totient is φ = 3996096820.

The previous prime is 3996096817. The next prime is 3996096859. The reversal of 3996096821 is 1286906993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3996009796 + 87025 = 63214^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996096821 - 2² = 3996096817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996095821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998048410 + 1998048411.

It is an arithmetic number, because the mean of its divisors is an integer number (1998048411).

Almost surely, 2^3996096821 is an apocalyptic number.

It is an amenable number.

3996096821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996096821 is an equidigital number, since it uses as much as digits as its factorization.

3996096821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 3996096821 is about 63214.6883326969. The cubic root of 3996096821 is about 1586.8845580635.

The spelling of 3996096821 in words is "three billion, nine hundred ninety-six million, ninety-six thousand, eight hundred twenty-one".