830439 has 8 divisors (see below), whose sum is σ = 1230320. Its totient is φ = 553608.

The previous prime is 830419. The next prime is 830441. The reversal of 830439 is 934038.

It is not a de Polignac number, because 830439 - 2⁷ = 830311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 30757 = 830439 / (8 + 3 + 0 + 4 + 3 + 9).

It is a Duffinian number.

830439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830419) 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, 15352 + ... + 15405.

It is an arithmetic number, because the mean of its divisors is an integer number (153790).

2⁸³⁰⁴³⁹ is an apocalyptic number.

830439 is a deficient number, since it is larger than the sum of its proper divisors (399881).

830439 is a wasteful number, since it uses less digits than its factorization.

830439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30766 (or 30760 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 830439 is about 911.2842586153. The cubic root of 830439 is about 93.9945296349.

The spelling of 830439 in words is "eight hundred thirty thousand, four hundred thirty-nine".