389735719997 has 16 divisors (see below), whose sum is σ = 422450759472. Its totient is φ = 357412124160.

The previous prime is 389735719987. The next prime is 389735719999. The reversal of 389735719997 is 799917537983.

It can be written as a sum of positive squares in 8 ways, for example, as 112913472676 + 276822247321 = 336026^2 + 526139^2 .

It is not a de Polignac number, because 389735719997 - 2³⁸ = 114857813053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389735719999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23783747 + ... + 23800127.

It is an arithmetic number, because the mean of its divisors is an integer number (26403172467).

Almost surely, 2^389735719997 is an apocalyptic number.

It is an amenable number.

389735719997 is a deficient number, since it is larger than the sum of its proper divisors (32715039475).

389735719997 is a wasteful number, since it uses less digits than its factorization.

389735719997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28208.

The product of its digits is 810152280, while the sum is 77.

The spelling of 389735719997 in words is "three hundred eighty-nine billion, seven hundred thirty-five million, seven hundred nineteen thousand, nine hundred ninety-seven".