995433209 has 2 divisors, whose sum is σ = 995433210. Its totient is φ = 995433208.

The previous prime is 995433203. The next prime is 995433247. The reversal of 995433209 is 902334599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869365225 + 126067984 = 29485^2 + 11228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-995433209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 995433209.

It is not a weakly prime, because it can be changed into another prime (995433203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497716604 + 497716605.

It is an arithmetic number, because the mean of its divisors is an integer number (497716605).

Almost surely, 2^995433209 is an apocalyptic number.

It is an amenable number.

995433209 is a deficient number, since it is larger than the sum of its proper divisors (1).

995433209 is an equidigital number, since it uses as much as digits as its factorization.

995433209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 995433209 is about 31550.4866681958. The cubic root of 995433209 is about 998.4754131495.

The spelling of 995433209 in words is "nine hundred ninety-five million, four hundred thirty-three thousand, two hundred nine".