2805221423 has 2 divisors, whose sum is σ = 2805221424. Its totient is φ = 2805221422.

The previous prime is 2805221407. The next prime is 2805221449. The reversal of 2805221423 is 3241225082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805221423 - 2⁴ = 2805221407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805221483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402610711 + 1402610712.

It is an arithmetic number, because the mean of its divisors is an integer number (1402610712).

Almost surely, 2^2805221423 is an apocalyptic number.

2805221423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805221423 is an equidigital number, since it uses as much as digits as its factorization.

2805221423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2805221423 is about 52964.3410513149. The cubic root of 2805221423 is about 1410.3353197096.

The spelling of 2805221423 in words is "two billion, eight hundred five million, two hundred twenty-one thousand, four hundred twenty-three".