1000035209 has 2 divisors, whose sum is σ = 1000035210. Its totient is φ = 1000035208.

The previous prime is 1000035187. The next prime is 1000035229. The reversal of 1000035209 is 9025300001.

It is an a-pointer prime, because the next prime (1000035229) can be obtained adding 1000035209 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956541184 + 43494025 = 30928^2 + 6595^2 .

It is an emirp because it is prime and its reverse (9025300001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000035209 - 2¹² = 1000031113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1000035229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500017604 + 500017605.

It is an arithmetic number, because the mean of its divisors is an integer number (500017605).

Almost surely, 2^1000035209 is an apocalyptic number.

It is an amenable number.

1000035209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000035209 is an equidigital number, since it uses as much as digits as its factorization.

1000035209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1000035209 is about 31623.3332999543. Note that the first 3 decimals coincide. The cubic root of 1000035209 is about 1000.0117361956.

The spelling of 1000035209 in words is "one billion, thirty-five thousand, two hundred nine".