830989 has 2 divisors, whose sum is σ = 830990. Its totient is φ = 830988.

The previous prime is 830981. The next prime is 831023. The reversal of 830989 is 989038.

830989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 116964 = 845^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 830989 - 2³ = 830981 is a prime.

It is an Ulam number.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415494 + 415495.

It is an arithmetic number, because the mean of its divisors is an integer number (415495).

2⁸³⁰⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

830989 is a deficient number, since it is larger than the sum of its proper divisors (1).

830989 is an equidigital number, since it uses as much as digits as its factorization.

830989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 830989 is about 911.5859805855. The cubic root of 830989 is about 94.0152759239.

The spelling of 830989 in words is "eight hundred thirty thousand, nine hundred eighty-nine".