2840647423 has 2 divisors, whose sum is σ = 2840647424. Its totient is φ = 2840647422.

The previous prime is 2840647417. The next prime is 2840647457. The reversal of 2840647423 is 3247460482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2840647423 - 2⁵ = 2840647391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2840647723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420323711 + 1420323712.

It is an arithmetic number, because the mean of its divisors is an integer number (1420323712).

Almost surely, 2^2840647423 is an apocalyptic number.

2840647423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840647423 is an equidigital number, since it uses as much as digits as its factorization.

2840647423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 2840647423 is about 53297.7243698078. The cubic root of 2840647423 is about 1416.2473525392.

The spelling of 2840647423 in words is "two billion, eight hundred forty million, six hundred forty-seven thousand, four hundred twenty-three".