839689919409 has 8 divisors (see below), whose sum is σ = 1221367155552. Its totient is φ = 508902981440.

The previous prime is 839689919389. The next prime is 839689919413. The reversal of 839689919409 is 904919986938.

839689919409 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 839689919409 - 2⁸ = 839689919153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (839689919489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12722574504 + ... + 12722574569.

It is an arithmetic number, because the mean of its divisors is an integer number (152670894444).

Almost surely, 2^839689919409 is an apocalyptic number.

It is an amenable number.

839689919409 is a deficient number, since it is larger than the sum of its proper divisors (381677236143).

839689919409 is a wasteful number, since it uses less digits than its factorization.

839689919409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25445149087.

The product of its (nonzero) digits is 272097792, while the sum is 75.

The spelling of 839689919409 in words is "eight hundred thirty-nine billion, six hundred eighty-nine million, nine hundred nineteen thousand, four hundred nine".