8120204439 has 8 divisors (see below), whose sum is σ = 11396778240. Its totient is φ = 5128550136.

The previous prime is 8120204437. The next prime is 8120204453. The reversal of 8120204439 is 9344020218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8120204439 - 2¹ = 8120204437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120204431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71229807 + ... + 71229920.

It is an arithmetic number, because the mean of its divisors is an integer number (1424597280).

Almost surely, 2^8120204439 is an apocalyptic number.

8120204439 is a deficient number, since it is larger than the sum of its proper divisors (3276573801).

8120204439 is a wasteful number, since it uses less digits than its factorization.

8120204439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142459749.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 8120204439 is about 90112.1769740361. The cubic root of 8120204439 is about 2009.9672807228.

The spelling of 8120204439 in words is "eight billion, one hundred twenty million, two hundred four thousand, four hundred thirty-nine".