830770309 has 2 divisors, whose sum is σ = 830770310. Its totient is φ = 830770308.

The previous prime is 830770267. The next prime is 830770379. The reversal of 830770309 is 903077038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551780100 + 278990209 = 23490^2 + 16703^2 .

It is a cyclic number.

It is not a de Polignac number, because 830770309 - 2¹³ = 830762117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830770379) by changing a digit.

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 as a sum of consecutive naturals, namely, 415385154 + 415385155.

It is an arithmetic number, because the mean of its divisors is an integer number (415385155).

Almost surely, 2^830770309 is an apocalyptic number.

It is an amenable number.

830770309 is a deficient number, since it is larger than the sum of its proper divisors (1).

830770309 is an equidigital number, since it uses as much as digits as its factorization.

830770309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 830770309 is about 28823.0863892124. The cubic root of 830770309 is about 940.0702788107.

The spelling of 830770309 in words is "eight hundred thirty million, seven hundred seventy thousand, three hundred nine".