2821079 has 2 divisors, whose sum is σ = 2821080. Its totient is φ = 2821078.

The previous prime is 2821073. The next prime is 2821097. The reversal of 2821079 is 9701282.

It is a happy number.

Together with next prime (2821097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2821079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821073) 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 as a sum of consecutive naturals, namely, 1410539 + 1410540.

It is an arithmetic number, because the mean of its divisors is an integer number (1410540).

2^2821079 is an apocalyptic number.

2821079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821079 is an equidigital number, since it uses as much as digits as its factorization.

2821079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2821079 is about 1679.6067992242. The cubic root of 2821079 is about 141.2987812821.

The spelling of 2821079 in words is "two million, eight hundred twenty-one thousand, seventy-nine".