2820797439 has 8 divisors (see below), whose sum is σ = 3766773120. Its totient is φ = 1877676696.

The previous prime is 2820797423. The next prime is 2820797489. The reversal of 2820797439 is 9347970282.

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

It is not a de Polignac number, because 2820797439 - 2⁴ = 2820797423 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2820797391 and 2820797400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820797489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711427 + ... + 715380.

It is an arithmetic number, because the mean of its divisors is an integer number (470846640).

Almost surely, 2^2820797439 is an apocalyptic number.

2820797439 is a deficient number, since it is larger than the sum of its proper divisors (945975681).

2820797439 is a wasteful number, since it uses less digits than its factorization.

2820797439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427469.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 2820797439 is about 53111.1799812431. The cubic root of 2820797439 is about 1412.9408029718.

The spelling of 2820797439 in words is "two billion, eight hundred twenty million, seven hundred ninety-seven thousand, four hundred thirty-nine".