389665699 has 16 divisors (see below), whose sum is σ = 427680000. Its totient is φ = 353729376.

The previous prime is 389665667. The next prime is 389665709. The reversal of 389665699 is 996566983.

It is a cyclic number.

It is not a de Polignac number, because 389665699 - 2⁵ = 389665667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389660699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38802 + ... + 47800.

It is an arithmetic number, because the mean of its divisors is an integer number (26730000).

Almost surely, 2^389665699 is an apocalyptic number.

389665699 is a deficient number, since it is larger than the sum of its proper divisors (38014301).

389665699 is a wasteful number, since it uses less digits than its factorization.

389665699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114.

The product of its digits is 18895680, while the sum is 61.

The square root of 389665699 is about 19739.9518489788. The cubic root of 389665699 is about 730.4055412259.

The spelling of 389665699 in words is "three hundred eighty-nine million, six hundred sixty-five thousand, six hundred ninety-nine".