1384243439 has 4 divisors (see below), whose sum is σ = 1388666256. Its totient is φ = 1379820624.

The previous prime is 1384243397. The next prime is 1384243459. The reversal of 1384243439 is 9343424831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1384243439 - 2⁸ = 1384243183 is a prime.

It is a super-2 number, since 2×1384243439² = 3832259796829093442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1384243396 and 1384243405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384243459) 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, 2210939 + ... + 2211564.

It is an arithmetic number, because the mean of its divisors is an integer number (347166564).

Almost surely, 2^1384243439 is an apocalyptic number.

1384243439 is a deficient number, since it is larger than the sum of its proper divisors (4422817).

1384243439 is an equidigital number, since it uses as much as digits as its factorization.

1384243439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422816.

The product of its digits is 248832, while the sum is 41.

The square root of 1384243439 is about 37205.4221720437. The cubic root of 1384243439 is about 1114.4762671340.

The spelling of 1384243439 in words is "one billion, three hundred eighty-four million, two hundred forty-three thousand, four hundred thirty-nine".