4138784399 has 4 divisors (see below), whose sum is σ = 4142723400. Its totient is φ = 4134845400.

The previous prime is 4138784389. The next prime is 4138784407. The reversal of 4138784399 is 9934878314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9934878314 = 2 ⋅4967439157.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4138784399 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 (4138784389) 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 3 ways as a sum of consecutive naturals, for example, 1967924 + ... + 1970025.

It is an arithmetic number, because the mean of its divisors is an integer number (1035680850).

Almost surely, 2^4138784399 is an apocalyptic number.

4138784399 is a deficient number, since it is larger than the sum of its proper divisors (3939001).

4138784399 is a wasteful number, since it uses less digits than its factorization.

4138784399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939000.

The product of its digits is 5225472, while the sum is 56.

The square root of 4138784399 is about 64333.3847935891. The cubic root of 4138784399 is about 1605.5516003411.

The spelling of 4138784399 in words is "four billion, one hundred thirty-eight million, seven hundred eighty-four thousand, three hundred ninety-nine".