384489665 has 16 divisors (see below), whose sum is σ = 528139008. Its totient is φ = 263230656.

The previous prime is 384489661. The next prime is 384489671. The reversal of 384489665 is 566984483.

It is a cyclic number.

It is not a de Polignac number, because 384489665 - 2² = 384489661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384489661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14444 + ... + 31266.

It is an arithmetic number, because the mean of its divisors is an integer number (33008688).

Almost surely, 2^384489665 is an apocalyptic number.

384489665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

384489665 is a deficient number, since it is larger than the sum of its proper divisors (143649343).

384489665 is a wasteful number, since it uses less digits than its factorization.

384489665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488.

The product of its digits is 4976640, while the sum is 53.

The square root of 384489665 is about 19608.4080179906. The cubic root of 384489665 is about 727.1570574162.

The spelling of 384489665 in words is "three hundred eighty-four million, four hundred eighty-nine thousand, six hundred sixty-five".