3989230721263 has 2 divisors, whose sum is σ = 3989230721264. Its totient is φ = 3989230721262.

The previous prime is 3989230721261. The next prime is 3989230721291. The reversal of 3989230721263 is 3621270329893.

3989230721263 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 is a cyclic number.

It is not a de Polignac number, because 3989230721263 - 2¹ = 3989230721261 is a prime.

Together with 3989230721261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989230721261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994615360631 + 1994615360632.

It is an arithmetic number, because the mean of its divisors is an integer number (1994615360632).

Almost surely, 2^{3989230721263} is an apocalyptic number.

3989230721263 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989230721263 is an equidigital number, since it uses as much as digits as its factorization.

3989230721263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 3989230721263 in words is "three trillion, nine hundred eighty-nine billion, two hundred thirty million, seven hundred twenty-one thousand, two hundred sixty-three".