83215859 has 2 divisors, whose sum is σ = 83215860. Its totient is φ = 83215858.

The previous prime is 83215837. The next prime is 83215889. The reversal of 83215859 is 95851238.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83215859 - 2¹² = 83211763 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83215889) 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, 41607929 + 41607930.

It is an arithmetic number, because the mean of its divisors is an integer number (41607930).

Almost surely, 2^83215859 is an apocalyptic number.

83215859 is a deficient number, since it is larger than the sum of its proper divisors (1).

83215859 is an equidigital number, since it uses as much as digits as its factorization.

83215859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 41.

The square root of 83215859 is about 9122.2726883162. The cubic root of 83215859 is about 436.5848892823.

The spelling of 83215859 in words is "eighty-three million, two hundred fifteen thousand, eight hundred fifty-nine".