83291032309 has 2 divisors, whose sum is σ = 83291032310. Its totient is φ = 83291032308.

The previous prime is 83291032303. The next prime is 83291032337. The reversal of 83291032309 is 90323019238.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46722119409 + 36568912900 = 216153^2 + 191230^2 .

It is a cyclic number.

It is not a de Polignac number, because 83291032309 - 2¹¹ = 83291030261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83291032303) 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, 41645516154 + 41645516155.

It is an arithmetic number, because the mean of its divisors is an integer number (41645516155).

Almost surely, 2^83291032309 is an apocalyptic number.

It is an amenable number.

83291032309 is a deficient number, since it is larger than the sum of its proper divisors (1).

83291032309 is an equidigital number, since it uses as much as digits as its factorization.

83291032309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 83291032309 in words is "eighty-three billion, two hundred ninety-one million, thirty-two thousand, three hundred nine".