384089521 has 8 divisors (see below), whose sum is σ = 386964864. Its totient is φ = 381223920.

The previous prime is 384089509. The next prime is 384089533. The reversal of 384089521 is 125980483.

It is an interprime number because it is at equal distance from previous prime (384089509) and next prime (384089533).

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

It is a cyclic number.

It is not a de Polignac number, because 384089521 - 2¹³ = 384081329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384089621) 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 7 ways as a sum of consecutive naturals, for example, 89106 + ... + 93316.

It is an arithmetic number, because the mean of its divisors is an integer number (48370608).

Almost surely, 2^384089521 is an apocalyptic number.

It is an amenable number.

384089521 is a deficient number, since it is larger than the sum of its proper divisors (2875343).

384089521 is a wasteful number, since it uses less digits than its factorization.

384089521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 384089521 is about 19598.2019838556. The cubic root of 384089521 is about 726.9047155402.

The spelling of 384089521 in words is "three hundred eighty-four million, eighty-nine thousand, five hundred twenty-one".