834139931438 has 8 divisors (see below), whose sum is σ = 1364956251480. Its totient is φ = 379154514280.

The previous prime is 834139931423. The next prime is 834139931491.

834139931438 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

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, 18957725693 + ... + 18957725736.

It is an arithmetic number, because the mean of its divisors is an integer number (170619531435).

Almost surely, 2^834139931438 is an apocalyptic number.

834139931438 is a deficient number, since it is larger than the sum of its proper divisors (530816320042).

834139931438 is a wasteful number, since it uses less digits than its factorization.

834139931438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37915451442.

The product of its digits is 6718464, while the sum is 56.

The spelling of 834139931438 in words is "eight hundred thirty-four billion, one hundred thirty-nine million, nine hundred thirty-one thousand, four hundred thirty-eight".