2799770321 has 4 divisors (see below), whose sum is σ = 2868057444. Its totient is φ = 2731483200.

The previous prime is 2799770299. The next prime is 2799770357. The reversal of 2799770321 is 1230779972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611869696 + 2187900625 = 24736^2 + 46775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2799770321 - 2⁶ = 2799770257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2799770221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34143500 + ... + 34143581.

It is an arithmetic number, because the mean of its divisors is an integer number (717014361).

Almost surely, 2^2799770321 is an apocalyptic number.

It is an amenable number.

2799770321 is a deficient number, since it is larger than the sum of its proper divisors (68287123).

2799770321 is an equidigital number, since it uses as much as digits as its factorization.

2799770321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68287122.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 2799770321 is about 52912.8559142294. The cubic root of 2799770321 is about 1409.4212068705.

The spelling of 2799770321 in words is "two billion, seven hundred ninety-nine million, seven hundred seventy thousand, three hundred twenty-one".