389305557939 has 8 divisors (see below), whose sum is σ = 519077477520. Its totient is φ = 259535338496.

The previous prime is 389305557931. The next prime is 389305557943. The reversal of 389305557939 is 939755503983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389305557939 - 2³ = 389305557931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389305557939.

It is not an unprimeable number, because it can be changed into a prime (389305557931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273067 + ... + 923675.

It is an arithmetic number, because the mean of its divisors is an integer number (64884684690).

Almost surely, 2^389305557939 is an apocalyptic number.

389305557939 is a deficient number, since it is larger than the sum of its proper divisors (129771919581).

389305557939 is a wasteful number, since it uses less digits than its factorization.

389305557939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850069.

The product of its (nonzero) digits is 137781000, while the sum is 66.

The spelling of 389305557939 in words is "three hundred eighty-nine billion, three hundred five million, five hundred fifty-seven thousand, nine hundred thirty-nine".