389945813289 has 16 divisors (see below), whose sum is σ = 553889120832. Its totient is φ = 243170823168.

The previous prime is 389945813281. The next prime is 389945813297. The reversal of 389945813289 is 982318549983.

It is an interprime number because it is at equal distance from previous prime (389945813281) and next prime (389945813297).

It is not a de Polignac number, because 389945813289 - 2³ = 389945813281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389945813281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23445664 + ... + 23462289.

It is an arithmetic number, because the mean of its divisors is an integer number (34618070052).

Almost surely, 2^389945813289 is an apocalyptic number.

It is an amenable number.

389945813289 is a deficient number, since it is larger than the sum of its proper divisors (163943307543).

389945813289 is a wasteful number, since it uses less digits than its factorization.

389945813289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46908136.

The product of its digits is 134369280, while the sum is 69.

The spelling of 389945813289 in words is "three hundred eighty-nine billion, nine hundred forty-five million, eight hundred thirteen thousand, two hundred eighty-nine".