389988065 has 8 divisors (see below), whose sum is σ = 468151488. Its totient is φ = 311879920.

The previous prime is 389988059. The next prime is 389988073. The reversal of 389988065 is 560889983.

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

It is not a de Polignac number, because 389988065 - 2⁸ = 389987809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389988065.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3734 + ... + 28176.

It is an arithmetic number, because the mean of its divisors is an integer number (58518936).

Almost surely, 2^389988065 is an apocalyptic number.

It is an amenable number.

389988065 is a deficient number, since it is larger than the sum of its proper divisors (78163423).

389988065 is a wasteful number, since it uses less digits than its factorization.

389988065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27639.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 389988065 is about 19748.1154797110. The cubic root of 389988065 is about 730.6069044394.

The spelling of 389988065 in words is "three hundred eighty-nine million, nine hundred eighty-eight thousand, sixty-five".