83880817 has 2 divisors, whose sum is σ = 83880818. Its totient is φ = 83880816.

The previous prime is 83880799. The next prime is 83880829. The reversal of 83880817 is 71808838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82882816 + 998001 = 9104^2 + 999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83880817 is a prime.

It is not a weakly prime, because it can be changed into another prime (83880317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41940408 + 41940409.

It is an arithmetic number, because the mean of its divisors is an integer number (41940409).

Almost surely, 2^83880817 is an apocalyptic number.

It is an amenable number.

83880817 is a deficient number, since it is larger than the sum of its proper divisors (1).

83880817 is an equidigital number, since it uses as much as digits as its factorization.

83880817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 83880817 is about 9158.6471162503. The cubic root of 83880817 is about 437.7446872878.

The spelling of 83880817 in words is "eighty-three million, eight hundred eighty thousand, eight hundred seventeen".