2820939321 has 8 divisors (see below), whose sum is σ = 3764244960. Its totient is φ = 1879129952.

The previous prime is 2820939313. The next prime is 2820939323. The reversal of 2820939321 is 1239390282.

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

It is a cyclic number.

It is not a de Polignac number, because 2820939321 - 2³ = 2820939313 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2820939321.

It is not an unprimeable number, because it can be changed into a prime (2820939323) 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 7 ways as a sum of consecutive naturals, for example, 369660 + ... + 377213.

It is an arithmetic number, because the mean of its divisors is an integer number (470530620).

Almost surely, 2^2820939321 is an apocalyptic number.

It is an amenable number.

2820939321 is a deficient number, since it is larger than the sum of its proper divisors (943305639).

2820939321 is a wasteful number, since it uses less digits than its factorization.

2820939321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748135.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 2820939321 is about 53112.5156719205. The cubic root of 2820939321 is about 1412.9644921956.

The spelling of 2820939321 in words is "two billion, eight hundred twenty million, nine hundred thirty-nine thousand, three hundred twenty-one".