384530749 has 8 divisors (see below), whose sum is σ = 398151000. Its totient is φ = 370934592.

The previous prime is 384530743. The next prime is 384530761. The reversal of 384530749 is 947035483.

It can be written as a sum of positive squares in 4 ways, for example, as 166023225 + 218507524 = 12885^2 + 14782^2 .

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

It is not a de Polignac number, because 384530749 - 2⁵ = 384530717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384530743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30247 + ... + 41035.

It is an arithmetic number, because the mean of its divisors is an integer number (49768875).

Almost surely, 2^384530749 is an apocalyptic number.

It is an amenable number.

384530749 is a deficient number, since it is larger than the sum of its proper divisors (13620251).

384530749 is a wasteful number, since it uses less digits than its factorization.

384530749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12047.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 384530749 is about 19609.4556018264. The cubic root of 384530749 is about 727.1829562107.

The spelling of 384530749 in words is "three hundred eighty-four million, five hundred thirty thousand, seven hundred forty-nine".