834391 has 8 divisors (see below), whose sum is σ = 874944. Its totient is φ = 794880.

The previous prime is 834367. The next prime is 834433. The reversal of 834391 is 193438.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834391 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 (834311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2⁸³⁴³⁹¹ is an apocalyptic number.

834391 is a deficient number, since it is larger than the sum of its proper divisors (40553).

834391 is a wasteful number, since it uses less digits than its factorization.

834391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its digits is 2592, while the sum is 28.

The square root of 834391 is about 913.4500533691. The cubic root of 834391 is about 94.1433981544.

It can be divided in two parts, 834 and 391, that added together give a triangular number (1225 = T₄₉).

The spelling of 834391 in words is "eight hundred thirty-four thousand, three hundred ninety-one".