389301665 has 4 divisors (see below), whose sum is σ = 467162004. Its totient is φ = 311441328.

The previous prime is 389301641. The next prime is 389301667. The reversal of 389301665 is 566103983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196897024 + 192404641 = 14032^2 + 13871^2 .

It is a cyclic number.

It is not a de Polignac number, because 389301665 - 2¹⁰ = 389300641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389301667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38930162 + ... + 38930171.

It is an arithmetic number, because the mean of its divisors is an integer number (116790501).

Almost surely, 2^389301665 is an apocalyptic number.

It is an amenable number.

389301665 is a deficient number, since it is larger than the sum of its proper divisors (77860339).

389301665 is an equidigital number, since it uses as much as digits as its factorization.

389301665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77860338.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 389301665 is about 19730.7289525755. The cubic root of 389301665 is about 730.1780168845.

The spelling of 389301665 in words is "three hundred eighty-nine million, three hundred one thousand, six hundred sixty-five".