3989231983663 has 2 divisors, whose sum is σ = 3989231983664. Its totient is φ = 3989231983662.

The previous prime is 3989231983661. The next prime is 3989231983699. The reversal of 3989231983663 is 3663891329893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3989231983663 - 2¹ = 3989231983661 is a prime.

Together with 3989231983661, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3989231983592 and 3989231983601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989231983661) 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, 1994615991831 + 1994615991832.

It is an arithmetic number, because the mean of its divisors is an integer number (1994615991832).

Almost surely, 2^{3989231983663} is an apocalyptic number.

3989231983663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989231983663 is an equidigital number, since it uses as much as digits as its factorization.

3989231983663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272097792, while the sum is 70.

The spelling of 3989231983663 in words is "three trillion, nine hundred eighty-nine billion, two hundred thirty-one million, nine hundred eighty-three thousand, six hundred sixty-three".