834376139 has 4 divisors (see below), whose sum is σ = 863147760. Its totient is φ = 805604520.

The previous prime is 834376121. The next prime is 834376141. The reversal of 834376139 is 931673438.

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-834376139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 834376139.

It is not an unprimeable number, because it can be changed into a prime (834376639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14385767 + ... + 14385824.

It is an arithmetic number, because the mean of its divisors is an integer number (215786940).

Almost surely, 2^834376139 is an apocalyptic number.

834376139 is a deficient number, since it is larger than the sum of its proper divisors (28771621).

834376139 is a wasteful number, since it uses less digits than its factorization.

834376139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28771620.

The product of its digits is 326592, while the sum is 44.

The square root of 834376139 is about 28885.5697364618. The cubic root of 834376139 is about 941.4283923444.

The spelling of 834376139 in words is "eight hundred thirty-four million, three hundred seventy-six thousand, one hundred thirty-nine".