83280889 has 2 divisors, whose sum is σ = 83280890. Its totient is φ = 83280888.

The previous prime is 83280853. The next prime is 83280917. The reversal of 83280889 is 98808238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64722025 + 18558864 = 8045^2 + 4308^2 .

It is a cyclic number.

It is not a de Polignac number, because 83280889 - 2¹³ = 83272697 is a prime.

It is not a weakly prime, because it can be changed into another prime (83280839) 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, 41640444 + 41640445.

It is an arithmetic number, because the mean of its divisors is an integer number (41640445).

Almost surely, 2^83280889 is an apocalyptic number.

It is an amenable number.

83280889 is a deficient number, since it is larger than the sum of its proper divisors (1).

83280889 is an equidigital number, since it uses as much as digits as its factorization.

83280889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 83280889 is about 9125.8363452343. The cubic root of 83280889 is about 436.6985844496.

The spelling of 83280889 in words is "eighty-three million, two hundred eighty thousand, eight hundred eighty-nine".