1389053717 has 2 divisors, whose sum is σ = 1389053718. Its totient is φ = 1389053716.

The previous prime is 1389053693. The next prime is 1389053779. The reversal of 1389053717 is 7173509831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994077841 + 394975876 = 31529^2 + 19874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1389053717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389053117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694526858 + 694526859.

It is an arithmetic number, because the mean of its divisors is an integer number (694526859).

Almost surely, 2^1389053717 is an apocalyptic number.

It is an amenable number.

1389053717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389053717 is an equidigital number, since it uses as much as digits as its factorization.

1389053717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1389053717 is about 37270.0109605565. The cubic root of 1389053717 is about 1115.7657182719.

The spelling of 1389053717 in words is "one billion, three hundred eighty-nine million, fifty-three thousand, seven hundred seventeen".