3984646882457 has 2 divisors, whose sum is σ = 3984646882458. Its totient is φ = 3984646882456.

The previous prime is 3984646882429. The next prime is 3984646882459. The reversal of 3984646882457 is 7542886464893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3554220349696 + 430426532761 = 1885264^2 + 656069^2 .

It is a cyclic number.

It is not a de Polignac number, because 3984646882457 - 2⁸ = 3984646882201 is a prime.

Together with 3984646882459, 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 (3984646882459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992323441228 + 1992323441229.

It is an arithmetic number, because the mean of its divisors is an integer number (1992323441229).

Almost surely, 2^{3984646882457} is an apocalyptic number.

It is an amenable number.

3984646882457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3984646882457 is an equidigital number, since it uses as much as digits as its factorization.

3984646882457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2229534720, while the sum is 74.

The spelling of 3984646882457 in words is "three trillion, nine hundred eighty-four billion, six hundred forty-six million, eight hundred eighty-two thousand, four hundred fifty-seven".