39828135839 has 4 divisors (see below), whose sum is σ = 40091898480. Its totient is φ = 39564373200.

The previous prime is 39828135829. The next prime is 39828135847. The reversal of 39828135839 is 93853182893.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39828135839 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 (39828135829) 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, 131881094 + ... + 131881395.

It is an arithmetic number, because the mean of its divisors is an integer number (10022974620).

Almost surely, 2^39828135839 is an apocalyptic number.

39828135839 is a deficient number, since it is larger than the sum of its proper divisors (263762641).

39828135839 is a wasteful number, since it uses less digits than its factorization.

39828135839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263762640.

The product of its digits is 11197440, while the sum is 59.

The spelling of 39828135839 in words is "thirty-nine billion, eight hundred twenty-eight million, one hundred thirty-five thousand, eight hundred thirty-nine".