830608309 has 2 divisors, whose sum is σ = 830608310. Its totient is φ = 830608308.

The previous prime is 830608297. The next prime is 830608319. The reversal of 830608309 is 903806038.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745563025 + 85045284 = 27305^2 + 9222^2 .

It is a cyclic number.

It is not a de Polignac number, because 830608309 - 2¹³ = 830600117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830608319) 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 as a sum of consecutive naturals, namely, 415304154 + 415304155.

It is an arithmetic number, because the mean of its divisors is an integer number (415304155).

Almost surely, 2^830608309 is an apocalyptic number.

It is an amenable number.

830608309 is a deficient number, since it is larger than the sum of its proper divisors (1).

830608309 is an equidigital number, since it uses as much as digits as its factorization.

830608309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 830608309 is about 28820.2760049240. The cubic root of 830608309 is about 940.0091703496.

The spelling of 830608309 in words is "eight hundred thirty million, six hundred eight thousand, three hundred nine".