3989329693 has 2 divisors, whose sum is σ = 3989329694. Its totient is φ = 3989329692.

The previous prime is 3989329637. The next prime is 3989329703. The reversal of 3989329693 is 3969239893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3623678809 + 365650884 = 60197^2 + 19122^2 .

It is an emirp because it is prime and its reverse (3969239893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3989329693 - 2¹⁷ = 3989198621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989329793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994664846 + 1994664847.

It is an arithmetic number, because the mean of its divisors is an integer number (1994664847).

Almost surely, 2^3989329693 is an apocalyptic number.

It is an amenable number.

3989329693 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989329693 is an equidigital number, since it uses as much as digits as its factorization.

3989329693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17006112, while the sum is 61.

The square root of 3989329693 is about 63161.1406879261. The cubic root of 3989329693 is about 1585.9882902927.

The spelling of 3989329693 in words is "three billion, nine hundred eighty-nine million, three hundred twenty-nine thousand, six hundred ninety-three".