2840722639 has 2 divisors, whose sum is σ = 2840722640. Its totient is φ = 2840722638.

The previous prime is 2840722609. The next prime is 2840722747. The reversal of 2840722639 is 9362270482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2840722639 - 2⁹ = 2840722127 is a prime.

It is a super-2 number, since 2×2840722639² = 16139410223454248642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2840722595 and 2840722604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2840722609) 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, 1420361319 + 1420361320.

It is an arithmetic number, because the mean of its divisors is an integer number (1420361320).

Almost surely, 2^2840722639 is an apocalyptic number.

2840722639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840722639 is an equidigital number, since it uses as much as digits as its factorization.

2840722639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 2840722639 is about 53298.4299862576. The cubic root of 2840722639 is about 1416.2598524503.

The spelling of 2840722639 in words is "two billion, eight hundred forty million, seven hundred twenty-two thousand, six hundred thirty-nine".