384049665 has 36 divisors (see below), whose sum is σ = 682452732. Its totient is φ = 199791360.

The previous prime is 384049663. The next prime is 384049667. The reversal of 384049665 is 566940483.

It is an interprime number because it is at equal distance from previous prime (384049663) and next prime (384049667).

It can be written as a sum of positive squares in 6 ways, for example, as 39538944 + 344510721 = 6288^2 + 18561^2 .

It is not a de Polignac number, because 384049665 - 2¹ = 384049663 is a prime.

It is a super-2 number, since 2×384049665² = 294988290373224450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 384049665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384049663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73107 + ... + 78183.

Almost surely, 2^384049665 is an apocalyptic number.

It is an amenable number.

384049665 is a deficient number, since it is larger than the sum of its proper divisors (298403067).

384049665 is a wasteful number, since it uses less digits than its factorization.

384049665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170 (or 5126 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 384049665 is about 19597.1851295027. The cubic root of 384049665 is about 726.8795716481.

The spelling of 384049665 in words is "three hundred eighty-four million, forty-nine thousand, six hundred sixty-five".