83895209 has 2 divisors, whose sum is σ = 83895210. Its totient is φ = 83895208.

The previous prime is 83895199. The next prime is 83895247. The reversal of 83895209 is 90259838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76038400 + 7856809 = 8720^2 + 2803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83895209 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83895209.

It is not a weakly prime, because it can be changed into another prime (83895299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41947604 + 41947605.

It is an arithmetic number, because the mean of its divisors is an integer number (41947605).

Almost surely, 2^83895209 is an apocalyptic number.

It is an amenable number.

83895209 is a deficient number, since it is larger than the sum of its proper divisors (1).

83895209 is an equidigital number, since it uses as much as digits as its factorization.

83895209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 83895209 is about 9159.4327881152. The cubic root of 83895209 is about 437.7697214632.

The spelling of 83895209 in words is "eighty-three million, eight hundred ninety-five thousand, two hundred nine".