830445 has 32 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 344640.

The previous prime is 830441. The next prime is 830447. The reversal of 830445 is 544038.

It is a happy number.

It is not a de Polignac number, because 830445 - 2² = 830441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830441) 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 31 ways as a sum of consecutive naturals, for example, 796 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁸³⁰⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

830445 is a deficient number, since it is larger than the sum of its proper divisors (828435).

830445 is a wasteful number, since it uses less digits than its factorization.

830445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 830445 is about 911.2875506666. The cubic root of 830445 is about 93.9947560074.

It can be divided in two parts, 8304 and 45, that multiplied together give a triangular number (373680 = T₈₆₄).

The spelling of 830445 in words is "eight hundred thirty thousand, four hundred forty-five".