2821919 has 2 divisors, whose sum is σ = 2821920. Its totient is φ = 2821918.

The previous prime is 2821913. The next prime is 2821933. The reversal of 2821919 is 9191282.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2821919 is a prime.

It is a super-2 number, since 2×2821919² = 15926453685122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821913) 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, 1410959 + 1410960.

It is an arithmetic number, because the mean of its divisors is an integer number (1410960).

2^2821919 is an apocalyptic number.

2821919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821919 is an equidigital number, since it uses as much as digits as its factorization.

2821919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 32.

The square root of 2821919 is about 1679.8568391384. The cubic root of 2821919 is about 141.3128041906.

The spelling of 2821919 in words is "two million, eight hundred twenty-one thousand, nine hundred nineteen".