384866539 has 4 divisors (see below), whose sum is σ = 384939880. Its totient is φ = 384793200.

The previous prime is 384866513. The next prime is 384866579. The reversal of 384866539 is 935668483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935668483 = 331 ⋅2826793.

It is a cyclic number.

It is not a de Polignac number, because 384866539 - 2⁷ = 384866411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384866579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28137 + ... + 39514.

It is an arithmetic number, because the mean of its divisors is an integer number (96234970).

Almost surely, 2^384866539 is an apocalyptic number.

384866539 is a deficient number, since it is larger than the sum of its proper divisors (73341).

384866539 is an equidigital number, since it uses as much as digits as its factorization.

384866539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73340.

The product of its digits is 3732480, while the sum is 52.

The square root of 384866539 is about 19618.0156743744. The cubic root of 384866539 is about 727.3945645354.

The spelling of 384866539 in words is "three hundred eighty-four million, eight hundred sixty-six thousand, five hundred thirty-nine".