83280949390 has 32 divisors (see below), whose sum is σ = 154000121184. Its totient is φ = 32403012480.

The previous prime is 83280949357. The next prime is 83280949391. The reversal of 83280949390 is 9394908238.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83280949391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384317 + ... + 1443223.

It is an arithmetic number, because the mean of its divisors is an integer number (4812503787).

Almost surely, 2^83280949390 is an apocalyptic number.

83280949390 is a deficient number, since it is larger than the sum of its proper divisors (70719171794).

83280949390 is a wasteful number, since it uses less digits than its factorization.

83280949390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62772.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 83280949390 in words is "eighty-three billion, two hundred eighty million, nine hundred forty-nine thousand, three hundred ninety".