83280959 has 4 divisors (see below), whose sum is σ = 84089616. Its totient is φ = 82472304.

The previous prime is 83280937. The next prime is 83280979. The reversal of 83280959 is 95908238.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83280959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83280979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404174 + ... + 404379.

It is an arithmetic number, because the mean of its divisors is an integer number (21022404).

Almost surely, 2^83280959 is an apocalyptic number.

83280959 is a deficient number, since it is larger than the sum of its proper divisors (808657).

83280959 is a wasteful number, since it uses less digits than its factorization.

83280959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808656.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 83280959 is about 9125.8401804985. The cubic root of 83280959 is about 436.6987068022.

The spelling of 83280959 in words is "eighty-three million, two hundred eighty thousand, nine hundred fifty-nine".