830945 has 4 divisors (see below), whose sum is σ = 997140. Its totient is φ = 664752.

The previous prime is 830939. The next prime is 830957. The reversal of 830945 is 549038.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271441 + 559504 = 521^2 + 748^2 .

It is a cyclic number.

It is not a de Polignac number, because 830945 - 2¹² = 826849 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83090 + ... + 83099.

It is an arithmetic number, because the mean of its divisors is an integer number (249285).

2⁸³⁰⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

830945 is a deficient number, since it is larger than the sum of its proper divisors (166195).

830945 is a wasteful number, since it uses less digits than its factorization.

830945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166194.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 830945 is about 911.5618465030. The cubic root of 830945 is about 94.0136165577.

The spelling of 830945 in words is "eight hundred thirty thousand, nine hundred forty-five".