2820779979 has 8 divisors (see below), whose sum is σ = 3772201680. Its totient is φ = 1874939136.

The previous prime is 2820779971. The next prime is 2820779987. The reversal of 2820779979 is 9799770282.

2820779979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2820779971) and next prime (2820779987).

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

It is not a de Polignac number, because 2820779979 - 2³ = 2820779971 is a prime.

It is a super-3 number, since 3×2820779979³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2820779971) 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, 1394034 + ... + 1396055.

It is an arithmetic number, because the mean of its divisors is an integer number (471525210).

Almost surely, 2^2820779979 is an apocalyptic number.

2820779979 is a deficient number, since it is larger than the sum of its proper divisors (951421701).

2820779979 is a wasteful number, since it uses less digits than its factorization.

2820779979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790429.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The square root of 2820779979 is about 53111.0156088170. The cubic root of 2820779979 is about 1412.9378877208.

The spelling of 2820779979 in words is "two billion, eight hundred twenty million, seven hundred seventy-nine thousand, nine hundred seventy-nine".