4138905839 has 16 divisors (see below), whose sum is σ = 4394023200. Its totient is φ = 3892377216.

The previous prime is 4138905811. The next prime is 4138905857. The reversal of 4138905839 is 9385098314.

It is not a de Polignac number, because 4138905839 - 2⁸ = 4138905583 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 (4138905809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203957 + ... + 223329.

It is an arithmetic number, because the mean of its divisors is an integer number (274626450).

Almost surely, 2^4138905839 is an apocalyptic number.

4138905839 is a deficient number, since it is larger than the sum of its proper divisors (255117361).

4138905839 is a wasteful number, since it uses less digits than its factorization.

4138905839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19594.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 4138905839 is about 64334.3286201076. The cubic root of 4138905839 is about 1605.5673035252.

The spelling of 4138905839 in words is "four billion, one hundred thirty-eight million, nine hundred five thousand, eight hundred thirty-nine".