834389 has 4 divisors (see below), whose sum is σ = 836256. Its totient is φ = 832524.

The previous prime is 834367. The next prime is 834433. The reversal of 834389 is 983438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983438 = 2 ⋅491719.

It is a cyclic number.

It is not a de Polignac number, because 834389 - 2⁸ = 834133 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (833389) 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, 182 + ... + 1304.

It is an arithmetic number, because the mean of its divisors is an integer number (209064).

2⁸³⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

834389 is a deficient number, since it is larger than the sum of its proper divisors (1867).

834389 is a wasteful number, since it uses less digits than its factorization.

834389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

The product of its digits is 20736, while the sum is 35.

The square root of 834389 is about 913.4489586178. The cubic root of 834389 is about 94.1433229351.

The spelling of 834389 in words is "eight hundred thirty-four thousand, three hundred eighty-nine".