384139026 has 12 divisors (see below), whose sum is σ = 832301262. Its totient is φ = 128046336.

The previous prime is 384139013. The next prime is 384139043. The reversal of 384139026 is 620931483.

It can be written as a sum of positive squares in only one way, i.e., 384120801 + 18225 = 19599^2 + 135^2 .

It is an unprimeable number.

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, 10670511 + ... + 10670546.

Almost surely, 2^384139026 is an apocalyptic number.

384139026 is an abundant number, since it is smaller than the sum of its proper divisors (448162236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

384139026 is a wasteful number, since it uses less digits than its factorization.

384139026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21341065 (or 21341062 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 384139026 is about 19599.4649416763. The cubic root of 384139026 is about 726.9359442600.

The spelling of 384139026 in words is "three hundred eighty-four million, one hundred thirty-nine thousand, twenty-six".