830945009 has 2 divisors, whose sum is σ = 830945010. Its totient is φ = 830945008.

The previous prime is 830944999. The next prime is 830945047. The reversal of 830945009 is 900549038.

It is an a-pointer prime, because the next prime (830945047) can be obtained adding 830945009 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813846784 + 17098225 = 28528^2 + 4135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-830945009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (830945209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415472504 + 415472505.

It is an arithmetic number, because the mean of its divisors is an integer number (415472505).

Almost surely, 2^830945009 is an apocalyptic number.

It is an amenable number.

830945009 is a deficient number, since it is larger than the sum of its proper divisors (1).

830945009 is an equidigital number, since it uses as much as digits as its factorization.

830945009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 830945009 is about 28826.1167866919. The cubic root of 830945009 is about 940.1361689713.

The spelling of 830945009 in words is "eight hundred thirty million, nine hundred forty-five thousand, nine".