83286809 has 2 divisors, whose sum is σ = 83286810. Its totient is φ = 83286808.

The previous prime is 83286799. The next prime is 83286839. The reversal of 83286809 is 90868238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71453209 + 11833600 = 8453^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 83286809 - 2⁴ = 83286793 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 83286809.

It is not a weakly prime, because it can be changed into another prime (83286839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41643404 + 41643405.

It is an arithmetic number, because the mean of its divisors is an integer number (41643405).

Almost surely, 2^83286809 is an apocalyptic number.

It is an amenable number.

83286809 is a deficient number, since it is larger than the sum of its proper divisors (1).

83286809 is an equidigital number, since it uses as much as digits as its factorization.

83286809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 83286809 is about 9126.1606933036. The cubic root of 83286809 is about 436.7089317390.

The spelling of 83286809 in words is "eighty-three million, two hundred eighty-six thousand, eight hundred nine".