2828821979 has 4 divisors (see below), whose sum is σ = 2829059376. Its totient is φ = 2828584584.

The previous prime is 2828821969. The next prime is 2828822027. The reversal of 2828821979 is 9791288282.

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

It is a cyclic number.

It is not a de Polignac number, because 2828821979 - 2¹² = 2828817883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2828821969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99824 + ... + 124989.

It is an arithmetic number, because the mean of its divisors is an integer number (707264844).

Almost surely, 2^2828821979 is an apocalyptic number.

2828821979 is a deficient number, since it is larger than the sum of its proper divisors (237397).

2828821979 is a wasteful number, since it uses less digits than its factorization.

2828821979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237396.

The product of its digits is 2322432, while the sum is 56.

The square root of 2828821979 is about 53186.6710652208. The cubic root of 2828821979 is about 1414.2793683533.

The spelling of 2828821979 in words is "two billion, eight hundred twenty-eight million, eight hundred twenty-one thousand, nine hundred seventy-nine".