384242539 has 6 divisors (see below), whose sum is σ = 393388116. Its totient is φ = 375304860.

The previous prime is 384242501. The next prime is 384242561. The reversal of 384242539 is 935242483.

It is not a de Polignac number, because 384242539 - 2¹¹ = 384240491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384246539) 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 5 ways as a sum of consecutive naturals, for example, 102057 + ... + 105754.

It is an arithmetic number, because the mean of its divisors is an integer number (65564686).

Almost surely, 2^384242539 is an apocalyptic number.

384242539 is a deficient number, since it is larger than the sum of its proper divisors (9145577).

384242539 is an equidigital number, since it uses as much as digits as its factorization.

384242539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207897 (or 207854 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 384242539 is about 19602.1054736475. The cubic root of 384242539 is about 727.0012336104.

The spelling of 384242539 in words is "three hundred eighty-four million, two hundred forty-two thousand, five hundred thirty-nine".