8120590689 has 4 divisors (see below), whose sum is σ = 10827454256. Its totient is φ = 5413727124.

The previous prime is 8120590679. The next prime is 8120590733. The reversal of 8120590689 is 9860950218.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8120590689 - 2¹⁷ = 8120459617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8120590649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353431779 + ... + 1353431784.

It is an arithmetic number, because the mean of its divisors is an integer number (2706863564).

Almost surely, 2^8120590689 is an apocalyptic number.

It is an amenable number.

8120590689 is a deficient number, since it is larger than the sum of its proper divisors (2706863567).

8120590689 is a wasteful number, since it uses less digits than its factorization.

8120590689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706863566.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 8120590689 is about 90114.3201106239. The cubic root of 8120590689 is about 2009.9991492781. Note that the first 3 decimals are identical.

The spelling of 8120590689 in words is "eight billion, one hundred twenty million, five hundred ninety thousand, six hundred eighty-nine".